Monitor Calibration Update

Monitor Calibration Update

Okay, so I no longer NEED a new monitor, because I’ve got one – and my wallet is in Leighton Hospital Intensive Care Unit on the critical list..

What have you gone for Andy?  Well if you remember, in my last post I was undecided between 24″ and 27″, Eizo or BenQ.  But I was favoring the Eizo CS2420, on the grounds of cost, both in terms of monitor and calibration tool options.

But I got offered a sweet deal on a factory-fresh Eizo CS270 by John Willis at Calumet – so I got my desire for more screen real-estate fulfilled, while keeping the costs down by not having to buy a new calibrator.

%name Monitor Calibration Update

But it still hurt to pay for it!

Monitor Calibration

There are a few things to consider when it comes to monitor calibration, and they are mainly due to the physical attributes of the monitor itself.

In my previous post I did mention one of them – the most important one – the back light type.

CCFL and WCCFL – cold cathode fluorescent lamps, or LED.

CCFL & WCCFL (wide CCFL) used to be the common type of back light, but they are now less common, being replaced by LED for added colour reproduction, improved signal response time and reduced power consumption.  Wide CCFL gave a noticeably greater colour reproduction range and slightly warmer colour temperature than CCFL – and my old monitor was fitted with WCCFL back lighting, hence I used to be able to do my monitor calibration to near 98% of AdobeRGB.

CCFL back lights have one major property – that of being ‘cool’ in colour, and LEDs commonly exhibit a slightly ‘warmer’ colour temperature.

But there’s LEDs – and there’s LEDs, and some are cooler than others, some are of fixed output and others are of a variable output.

The colour temperature of the backlighting gives the monitor a ‘native white point’.

The ‘brightness’ of the backlight is really the only true variable on a standard type of LCD display, and the inter-relationship between backlight brightness and colour temperature, and the size of the monitors CLUT (colour look-up table) can have a massive effect on the total number of colours that the monitor can display.

Industry-standard documentation by folk a lot cleverer than me has for years recommended the same calibration target settings as I have alluded to in previous blog posts:

White Point: D65 or 6500K

Brightness: 120 cdm² or candelas per square meter

Gamma: 2.2

Screen Shot 2017 04 02 at 13.04.25 Monitor Calibration Update

The ubiquitous ColorMunki Photo ‘standard monitor calibration’ method setup screen.

This setup for ‘standard monitor calibration’ works extremely well, and has stood me in good stead for more years than I care to add up.

As I mentioned in my previous post, standard monitor calibration refers to a standard method of calibration, which can be thought of as ‘software calibration’, and I have done many print workshops where I have used this method to calibrate Eizo ColorEdge and NEC Spectraviews with great effect.

However, these more specialised colour management monitors have the added bonus of giving you a ‘hardware monitor calbration’ option.

To carry out a hardware monitor calibration on my new CS270 ColorEdge – or indeed any ColorEdge – we need to employ the Eizo ColorNavigator.

The start screen for ColorNavigator shows us some interesting items:

colnav1 Monitor Calibration Update

The recommended brightness value is 100 cdm² – not 120.

The recommended white point is D55 not D65.

Thank God the gamma value is the same!

Once the monitor calibration profile has been done we get a result screen of the physical profile:

colnav2 Monitor Calibration Update

Now before anyone gets their knickers in a knot over the brightness value discrepancy there’s a couple of things to bare in mind:

  1. This value is always slightly arbitrary and very much dependent on working/viewing conditions.  The working environment should be somewhere between 32 and 64 lux or cdm² ambient – think Bat Cave!  The ratio of ambient to monitor output should always remain at between 32:75/80 and 64:120/140 (ish) – in other words between 1:2 and 1:3 – see earlier post here.
  2. The difference between 100 and 120 cdm² is less than 1/4 stop in camera Ev terms – so not a lot.

What struck me as odd though was the white point setting of D55 or 5500K – that’s 1000K warmer than I’m used to. (yes- warmer – don’t let that temp slider in Lightroom cloud your thinking!).

1000k Monitor Calibration UpdateAfter all, 1000k is a noticeable variation – unlike the brightness 20cdm² shift.

Here’s the funny thing though; if I ‘software calibrate’ the CS270 using the ColorMunki software with the spectro plugged into the Mac instead of the monitor, I visually get the same result using D65/120cdm² as I do ‘hardware calibrating’ at D55 and 100cdm².

The same that is, until I look at the colour spaces of the two generated ICC profiles:

profile Monitor Calibration Update

The coloured section is the ‘software calibration’ colour space, and the wire frame the ‘hardware calibrated’ Eizo custom space – click the image to view larger in a separate window.

The hardware calibration profile is somewhat larger and has a slightly better black point performance – this will allow the viewer to SEE just that little bit more tonality in the deepest of shadows, and those perennially awkward colours that sit in the Blue, Cyan, Green region.

It’s therefore quite obvious that monitor calibration via the hardware/ColorNavigator method on Eizo monitors does buy you that extra bit of visual acuity, so if you own an Eizo ColorEdge then it is the way to go for sure.

Having said that, the differences are small-ish so it’s not really worth getting terrifically evangelical over it.

But if you have the monitor then you should have the calibrator, and if said calibrator is ‘on the list’ of those supported by ColorNavigator then it’s a bit of a JDI – just do it.

You can find the list of supported calibrators here.

Eizo and their ColorNavigator are basically making a very effective ‘mash up’ of the two ISO standards 3664 and 12646 which call for D65 and D50 white points respectively.

Why did I go CHEAP ?

Well, cheaper…..

Apart from the fact that I don’t like spending money – the stuff is so bloody hard to come by – I didn’t want the top end Eizo in either 27″ or 24″.

With the ‘top end’ ColorEdge monitors you are paying for some things that I at least, have little or no use for:

  • 3D CLUT – I’m a general sort of image maker who gets a bit ‘creative’ with my processing and printing.  If I was into graphics and accurate repro of Pantone and the like, or I specialised in archival work for the V & A say, then super-accurate colour reproduction would be critical.  The advantage of the 3D CLUT is that it allows a greater variety of SUBTLY different tones and hues to be SEEN and therefore it’s easier to VISUALLY check that they are maintained when shifting an image from one colour space to another – eg softproofing for print.  I’m a wildlife and landscape photographer – I don’t NEED that facility because I don’t work in a world that requires a stringent 100% colour accuracy.
  • Built-in Calibrator – I don’t need one ‘cos I’ve already got one!
  • Built-in Self-Correction Sensor – I don’t need one of those either!

So if your photography work is like mine, then it’s worth hunting out a ‘zero hours’ CS270 if you fancy the extra screen real-estate, and you want to spend less than if buying its replacement – the CS2730.  You won’t notice the extra 5 milliseconds slower response time, and the new CS2730 eats more power – but you do get a built-in carrying handle!

 

Raw File Compression

Raw File Compression.

Today I’m going to give you my point of view over that most vexatious question – is LOSSLESS raw file compression TRULY lossless?

I’m going to upset one heck of a lot of people here, and my chances of Canon letting me have any new kit to test are going to disappear over the horizon at a great rate of knots, but I feel compelled to post!

What prompts me to commit this act of potential suicide?

It’s this shot from my recent trip to Norway:

FW1Q1351 2 900x600 Raw File Compression

Direct from Camera

FW1Q1351 900x600 Raw File Compression

Processed in Lightroom

I had originally intended to shoot Nikon on this trip using a hire 400mm f2.8, but right at the last minute there was a problem with the lens that couldn’t be sorted out in time, so Calumet supplied me with a 1DX and a 200-400 f4 to basically get me out of a sticky situation.

As you should all know by now, the only problems I have with Canon cameras are their  short Dynamic Range, and Canons steadfast refusal to allow for uncompressed raw recording.

The less experienced shooter/processor might look at the shot “ex camera” and be disappointed – it looks like crap, with far too much contrast, overly dark shadows and near-blown highlights.

Shot on Nikon the same image would look more in keeping with the processed version IF SHOT using the uncompressed raw option, which is something I always do without fail; and the extra 3/4 stop dynamic range of the D4 would make a world of difference too.

Would the AF have done as good a job – who knows!

The lighting in the shot is epic from a visual PoV, but bad from a camera exposure one. A wider dynamic range and zero raw compression on my Nikon D4 would allow me to have a little more ‘cavalier attitude’ to lighting scenarios like this – usually I’d shoot with +2/3Ev permanently dialled into the camera.  Overall the extra dynamic range would give me less contrast, and I’d have more highlight detail and less need to bump up the shadow areas in post.

In other words processing would be easier, faster and a lot less convoluted.

But I can’t stress enough just how much detrimental difference LOSSLESS raw file compression CAN SOMETIMES make to a shot.

Now there is a lot – and I mean A LOT – of opinionated garbage written all over the internet on various forums etc about lossless raw file compression, and it drives me nuts.  Some say it’s bad, most say it makes no difference – and both camps are WRONG!

Sometimes there is NO visual difference between UNCOMPRESSED and LOSSLESS, and sometimes there IS.  It all depends on the lighting and the nature of the scene/subject colours and how they interact with said lighting.

The main problem with the ‘it makes no difference’ camp is that they never substantiate their claims; and if they are Canon shooters they can’t – because they can’t produce an image with zero raw file compression to compare their standard lossless CR2 files to!

So I’ve come up with a way of illustrating visually the differences between various levels of raw file compression on Nikon using the D800E and Photoshop.

But before we ‘get to it’ let’s firstly refresh your understanding. A camera raw file is basically a gamma 1.0, or LINEAR gamma file:

LinVsHum3 900x271 Raw File Compression

Linear (top) vs Encoded Gamma

The right hand 50% of the linear gamma gradient represents the brightest whole stop of exposure – that’s one heck of a lot of potential for recording subtle highlight detail in a raw file.

It also represents the area of tonal range that is frequently most effected by any form of raw file compression.

Neither Nikon or Canon will reveal to the world the algorithm-based methods they use for lossless or lossy raw file compression, but it usually works by a process of ‘Bayer Binning’.

Bayer Pattern Raw File Compression

If we take a 2×2 block, it contains 2 green, 1 red and 1 blue photosite photon value – if we average the green value and then interpolate new values for red and blue output we will successfully compress the raw file.  But the data will be ‘faux’ data, not real data.

The other method we could use is to compress the tonal values in that brightest stop of recorded highlight tone – which is massive don’t forget – but this will result in a ’rounding up or down’ of certain bright tonal values thus potentially reducing some of the more subtle highlight details.

We could also use some variant of the same type of algorithm to ‘rationalise’ shadow detail as well – with pretty much the same result.

In the face of Nikon and Canons refusal to divulge their methodologies behind raw file compression, especially lossless, we can only guess what is actually happening.

I read somewhere that with lossless raw file compression the compression algorithms leave a trace instruction about what they have done and where they’ve done it in order that a raw handler programme such as Lightroom can actually ‘undo’ the compression effects – that sounds like a recipe for disaster if you ask me!

Personally I neither know nor do I care – I know that lossless raw file compression CAN be detrimental to images shot under certain conditions, and here’s the proof – of a fashion:

Let’s look at the following files:

14bitUC1 258x400 Raw File Compression

Image 1: 14 bit UNCOMPRESSED

14bitUC2 258x400 Raw File Compression

Image 2: 14 bit UNCOMPRESSED

14bitLosslessC 258x400 Raw File Compression

Image 3: 14 bit LOSSLESS compression

14bitLossyC 258x400 Raw File Compression

Image 4: 14 bit LOSSY compression

12bitUC 258x400 Raw File Compression

Image 5: 12 bit UNCOMPRESSED

Yes, there are 2 files which are identical, that is 14 bit uncompressed – and there’s a reason for that which will become apparent in a minute.

First, some basic Photoshop ‘stuff’.  If I open TWO images in Photoshop as separate layers in the same document, and change the blend mode of the top layer to DIFFERENCE I can then see the differences between the two ‘images’.  It’s not a perfect way of proving my point because of the phenomenon of photon flux.

Photon Flux Andy??? WTF is that?

Well, here’s where shooting two identical 14 bit uncompressed files comes in – they themselves are NOT identical!:

controlunamplified 258x400 Raw File Compression control 258x400 Raw File Compression

The result of overlaying the two identical uncompressed raw files (above left) – it looks almost black all over indicating that the two shots are indeed pretty much the same in every pixel.  But if I amplify the image with a levels layer (above right) you can see the differences more clearly.

So there you have it – Photon Flux! The difference between two 14 bit UNCOMPRESSED raw files shot at the same time, same ISO, shutter speed AND with a FULLY MANUAL APERTURE.  The only difference between the two shots is the ratio and number of photons striking the subject and being reflected into the lens.

The Levels Adjustment Layer had values of 0, 50 and 150, and is going to be added to the following comparison images:

Firstly 14 Bit UNCOMPRESSED compared to 14 bit LOSSLESS (the important one!):

14bitUCvLosslessC 258x400 Raw File Compression

14 bit UNCOMPRESSED vs 14 bit LOSSLESS

Please remember, the above ‘difference’ image contains photon flux variations too, but if you look carefully you will see greater differences than in the ‘flux only’ image above.

14bitUCvLossyC 258x400 Raw File Compression 14bitUCv12bitUC 258x400 Raw File Compression

The two images above illustrate the differences between 14 bit uncompressed and 14 bit LOSSY compression (left) and 14 bit UNCOMPRESSED and 12 bit UNCOMPRESSED (right) just for good measure!

In Conclusion

As I indicated earlier in the post, this is not a definitive testing method, sequential shots will always contain a photon flux variation that ‘pollutes’ the ‘difference’ image.

I purposefully chose this white subject with textured aluminium fittings and a blackish LED screen because the majority of sensor response will lie in that brightest gamma 1.0 stop.

The exposure was a constant +1EV, 1/30th @ f 18 and 100 ISO – nearly maximum dynamic range for the D800E, and f18 was set manually to avoid any aperture flicker caused by auto stop down.

You can see from all the ‘difference’ images that the part of the subject that seems to suffer the most is the aluminium part, not the white areas.  The aluminium has a stippled texture causing a myriad of small specular highlights – brighter than the white parts of the subject.

What would 14 bit uncompressed minus 14 bit lossless minus photon flux look like?  In a perfect world I’d be able to show you accurately, but we don’t live in one of those so I can’t!

We can try it using the flux shot from earlier:

losslessminuscontrol 258x400 Raw File Compression

But this is wildly inaccurate as the flux component is not pertinent to the photons at the actual time the lossless compression shot was taken.  But the fact that you CAN see an image does HINT that there is a real difference between UNCOMPRESSED and LOSSLESS compression – in certain circumstances at least.

If you have never used a camera that offers the zero raw file compression option then basically what you’ve never had you never miss.  But as a Nikon shooter I shoot uncompressed all the time – 90% of the time I don’t need to, but it just saves me having to remember something when I do need the option.

FW1Q4469 600x400 Raw File Compression

Would this 1DX shot be served any better through UNCOMPRESSED raw recording?  Most likely NO – why?  Low Dynamic Range caused in the main by flat low contrast lighting means no deep dark shadows and nothing approaching a highlight.

I don’t see it as a costly option in terms of buffer capacity or on-board storage, and when it comes to processing I would much rather have a surfeit of sensor data rather than a lack of it – no matter how small that deficit might be.

Lossless raw file compression has NO positive effect on your images, and it’s sole purpose in life is to allow you to fit more shots on the storage media – that’s it pure and simple.  If you have the option to shoot uncompressed then do so, and buy a bigger card!

What pisses my off about Canon is that it would only take, I’m sure, a firmware upgrade to give the 1DX et al the ability to record with zero raw file compression – and, whether needed or not, it would stop miserable grumpy gits like me banging on about it!

 

Prospec USB 3.0 card reader

Prospec USB 3.0 card reader.

A few weeks ago I decided that my Mac Pro4.1 early 2009 needed to be upgraded to USB 3, seeing as I’d not long since fitted it with an SSD for the OS – yes, I found myself in the mood to spend money; obviously I was unwell!

So I bought a 4-port expansion card from Mac Upgrades, installed it in the Mac and connected my 8TB G-drive – and all has worked perfectly ever since.

Being a mainly Nikon user, the XQD reader showed an instant improvement in transfer speed too, but for all my CF cards I was still stuck with my ancient Sandisk USB 2 reader.

I perused a few USB 3 reader prices in was left gasping – obviously I was now feeling a little better!

But then I spied this:

D4D3688 Edit Prospec USB 3.0 card reader

Prospec USB 3.0 Multi-Card Reader

Twenty quid! That’s right, just £20 – bargain!

Real world read-speed testing using Black Magic, and 32 GB Prospec 1010x CF cards yield the following results:

  1. Sandisk USB 2 reader – 36.9 MB/sec
  2. Prospec USB 3.0 reader – 112.7 MB/sec

and just as a comparison, the Sony XQD reader and H-series card averages 139.2 MB/sec.

Previous blog posts have shown you that I’m a fan of Calumet Prospec CF cards; mainly because they are re-badged Delkins, and in my experience simply bomb-proof and good VFM.

I can’t say for sure without checking, but this Prospec USB 3 reader looks VERY much like a re-brand of the Delkin USB 3.0 multi-card reader, but is basically £10 cheaper.

It certainly sucks up uncompressed D800E 14bit RAW files at an impressive rate of knots I can tell you.

In my earlier Prospec CF card post I did allude to the slightly odd fact that the larger the CF card capacity was, the faster its read speed became.  I also bought a 64Gb Prospec 1010x, just to give the D800E more capacity for shooting HQ time-lapse – this card clocks a read-speed average of 119.8 MB/sec – basically 7MB/sec faster than its 32GB cousin.

Yes, there’s cards and readers out there that might yield faster results; but at what cost to your pocket?

But this level of “REAL WORLD” performance is plenty fast enough for yours truly – especially if, like me, you have short arms and long pockets!

You can view the product HERE – BUY one!

 

Lightroom Dehaze – part 2

More Thoughts on The Lightroom Dehaze Control

Screen Shot 2015 06 27 at 14.49.06 900x625 Lightroom Dehaze   part 2

With the dehaze adjustment in Lightroom (right) the sky and distant hills look good, but the foreground looks poor.

In my previous post I did say I’d be uploading another video reflecting my thoughts on the Lightroom/ACR dehaze adjustment.

And I’ve just done that – AND I’ve made a concious effort to keep the ramblings down too..!

In the video I look at the effects of the dehaze adjustment on 4 very different images, and alternative ways of obtaining similar or better results without it.

You may see some ‘banding’ on the third image I work on – this is down to YouTube video compression.

In conclusion I have to say that I find the dehaze ‘tool’ something of an anti-climax if I’m honest. In fairly small positive amounts it can work exceptionally well in terms of a quick work flow on relatively short dynamic range images.  But I’m not a really big fan in general, and It’s possible to create pretty much the same adjustments using the existing Lightroom tools.

In the video I make a passing mention of a third party plug-in by Topaz.

If you take my advice, get the Topaz Clarity plug-in for Lightroom, or Photoshop using the link below.
Clarity banner 125x125 3 Lightroom Dehaze   part 2

I’ll be doing an ‘in-depth’ look at this Topaz plug-in in the next few days or so – it’s got a lot going for it, isn’t all that expensive, and beats the living daylights out of the Lightroom/ACR dehaze tool on those tricky images with a myriad of fine detail.

Clicking the link above means that I can earn a small commission which helps keep this blog going!

Please consider supporting this blog.

This blog really does need your support. All the information I put on these pages I do freely, but it does involve costs in both time and money.

If you find this post useful and informative please could you help by making a small donation – it would really help me out a lot – whatever you can afford would be gratefully received.

Donations would help offset the costs of running this blog and so help me to bring you lots more useful and informative content.

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Prospec 32Gb UDMA 7 CF

 The Prospec 32Gb UDMA 7 Compact Flash Card from Calumet – review

Prospec Prospec 32Gb UDMA 7 CF

The Prospec 32Gb UDMA 7 Compact Flash Card from Calumet – click image to visit the product order page.

Because I’m something of a photographic ‘old fart’ and have been taking images for a living since before the venerable A1 was a glimmer in some Canon engineers eye, I treat everything new with suspicion!

Back in those days when we shot on film, suspicious gits like me had our favourite films we used.  These were whittled down from the vast array on offer, not only on the basis of their performance, but also on reliability.

Did the sprocket holes tear in a particular cameraif they did then to avoid imminent disaster you’d never put that film in that camera.

Were the ‘tails’ always taped to the cassette spool? Christ, that one nearly cost me a boat-load of money at a wedding once – both bride and groom were barristers!

Thank the Lord we don’t have problems like that any more.

But CF cards come with their equivalent problem – card failure.

CF cards are basically Flash RAM, just like SSDs in the latest computers.  And as such they are prone to some degree of instant failure over time.

 The Way I Use Camera Storage Media

When I’ve finished shooting something I move it from the camera storage to my main imaging machine as soon as possible.  Once the shots are on the computer, the card goes back in the camera and is immediately reformatted.

Back when the D3 was Nikon’s flagship I’d had some clonking failures of Lexar CF cards and Sandisk Ultras, when Kevin Treadwell at TFC Birmingham put me on to Delkin cards – and I have never had a problem with them………(see footnote)…

And the two original 16Gb Delkins I bought for the D3 are still going strong to this day!

So when I eventually moved to the D4 I wanted a 32Gb Delkin UDMA 7 to go with the 32Gb Sony XQD, but I couldn’t locate one anywhere.

I was moaning about this to Stuart Tudor-Wood at Calumet Birmingham and he suggested I tried their own Prospec 32Gb UDMA 7 instead.

Can you imagine what the “suspicious old photography fart” in me was saying; I was used to possibly the most reliable memory on the planet, and the priciest; and here was something I’d never heard of, and costing pretty much the same..

I did manage to walk out of the door without paying for it, so that was a small victory – but it only lasted 3 weeks until I was doing another workshop there – he nailed me for it the minute I walked through the door!

So, here we are, two years later.  The other day I realised how long I’d had this card in regular use.  It’s a mighty rare occurrence for me to have a day shooting long lens action and not generate some use of the CF card.

Even if I’ve only shot to the XQD card, force of habit leads me to format both cards one after the other.

And if I’m going to shoot video I shoot that to the XQD and then remove it if I want to shoot stills, which consequently go to the CF card.

When I’m testing lenses and shooting for workshop slides etc I shoot to the CF card, then stick that in my steam-powered laptop – it can never see my XQD reader and I daren’t even think about asking it to accommodate tethered shooting..

I bought the card a new brother so I had two of them in the 1DX when I went to Norway in February this year.

All in all, looking back through all the image batches I’ve shot I reckoned that this one card had been reformatted 981 times in a selection of camera bodies from a 1DX and 5DMk3 to a D4S, D4, D800, D800E and D810.

In the D4 this card allows me to shoot 41 14bit uncompressed raw files before I hit the end of the camera buffer; which let’s face it, is plenty.

So I promptly set about shooting 20 bursts of 41 frames, wiping the card between bursts, just so that I could say with some degree of certainty that the card had just hit its 1000th reformat.

Now THAT is a good, solid and highly reliable card that has put up with more abuse in the last two years than some of my clients would give their CF cards in a lifetime.

What Do The ‘Hieroglyphics’ All Mean?

I must admit to being somewhat ambivalent to the majority of these speed numbers – at the end of the day, as a photographer you are more interested in sustained write speed than you are in read speed – or at least you should be.

The faster the write speed of the media the longer it takes to hit the end of the camera internal buffer – this means you shoot more sequential frames in a burst.

CF6 Prospec 32Gb UDMA 7 CF

This logo means the media is compliant with the CFA’s CF6 specification, which is supposed to provide data transfer rates of 167Mb/sec.

But that quoted transfer rate could be either read or write – they never seem to commit!

CF6 specification means UDMA 7 compliance; whereas UDMA 6 equated to CF 5 specification and transfer speeds of 133Mb/sec.

CF cards have to communicate with a host device – in our case our camera; and UMDA is the most efficient and fastest mode of communication. But not ALL cameras are UDMA compliant.  And those that are might not be UDMA 7 compliant.

If a camera is not UDMA compatible then believe it or not, a slower non-UDMA card might make the camera work faster. If you put a UDMA 7 card in a camera that is only UDMA 6 compliant then that’s fine, but communication between the two will be at UDMA 6 speeds.

The moral here is to check your camera specifications, and available firmware upgrades.

What does 1010x mean? Known as the card Commercial X Rating it’s an indication of read speed more than anything else, and basically relates the speed of the card as a multiple of the old CD-ROM standard of 150KBs.  So 1010x equates to 151.15Mbs.

But here’s the thing; none of these speeds, theoretical or otherwise, are derived via a camera – they are all acquired on a test-bench computer and a variety of card interfaces.

There is a simple if slightly ‘rough ‘n ready’ test that you can do to check the camera/media combo write speed:

  1. Set the camera to its fastest RAW shooting frame rate (Canon 1DX users note, that’s NOT 14fps!).
  2. Set the burst length to 30 frames.
  3. Put the camera in manual mode, auto iso, and set the shortest shutter speed.

Get a stop-watch and be prepared to start it when the ‘data write’ indicator lights up.

Press and hold the shutter button to start the burst of exposures, take your finger off the shutter button when the camera stops shooting.  The indicator light will still be on, and the stop watch should still be running.  Stop the clock when the light goes out!

Multiply the number of frames by the size of your RAW file, then divide the result by the time in seconds and you’ll have a rough value for your data write speed in Mb/sec.

In a Canon 1DX the Prospec 32Gb UDMA 7 CF card chugs away at a highly respectable 69Mbs write speed.

32Gb of storage with great reliability and ‘real world’ write speed like that is great – especially for the price.

Nikon Users

If, like me, you mainly shoot uncompressed 14 bit RAW (not an option for Canon shooters) the write speed of the Prospec 32Gb UDMA 7 CF card in a D4/4S will drop to around 41Mbs due to the much increased file size of each RAW frame – 35.9Mb average RAW size, as opposed to the 1DX average file size of around 26.4Mb.

But sensible burst shooting in conjunction with the huge Nikon D4/4S buffer means you will never suffer from ‘buffer lock-out’.

Conclusion

Bearing in mind that this is just my opinion, the Prospec 32Gb UDMA 7 CF card represents exceptionally good value for money.  Yes, there are faster cards out there; but I’ve been bitten by both S****** and L**** in the past, and ‘once bitten twice shy’ and all that……

For me the write/format longevity of this card is what strikes me the most, and for the price this card is well worthy of anyone’s consideration.

D4D2589 900x599 Prospec 32Gb UDMA 7 CF

Two years and over 1000 reformats, the Prospec 32Gb UDMA 7 CF card is still going strong – have a Kite!

Footnote

I’ve just had it confirmed……..the Prospec is actually Delkin; so bearing in mind what I said earlier, the reliability comes as no surprise!

Please consider supporting this blog.

This blog really does need your support. All the information I put on these pages I do freely, but it does involve costs in both time and money.

If you find this post useful and informative please could you help by making a small donation – it would really help me out a lot – whatever you can afford would be gratefully received.

Donations would help offset the costs of running this blog and so help me to bring you lots more useful and informative content.

Many thanks in advance.

 

HDR in Lightroom CC (2015)

Lightroom CC (2015) – exciting stuff!

New direct HDR MERGE for bracketed exposure sequences inside the Develop Module of Lightroom CC 2015 – nice one Adobe!  I can see Eric Chan’s finger-prints all over this one…!

D4D4469 HDR 600x400 HDR in Lightroom CC (2015)

Twilight at Porth Y Post, Anglesey.

After a less than exciting 90 minutes on the phone with Adobe this vary morning – that’s about 10 minutes of actual conversation and an eternity of crappy ‘Muzak’ – I’ve managed to switch from my expensive old single app PsCC subscription to the Photography Plan – yay!

They wouldn’t let me upgrade my old stand-alone Lr4/Lr5 to Lr6 ‘on the cheap’ so now they’ve given me two apps for half the price I was paying for 1 – mental people, but I’ll not be arguing!

I was really eager to try out the new internal ‘Merge’ script/command for HDR sequences – and boy am I impressed.

I picked a twilight seascape scene I shot last year:

5 600x375 HDR in Lightroom CC (2015)

Click to view LARGER IMAGE.

I’ve taken a 6 shot exposure bracketed sequence of RAW files above, into the Develop Module of Lightroom CC and done 3 simple adjustments to all 6 under Auto Synch:

  1. Change camera profile from Adobe Standard to Camera Neutral.
  2. ‘Tick’ Remove Chromatic Aberration in the Lens Corrections panel.
  3. Change the colour temperature from ‘as shot’ to a whopping 13,400K – this neutralises the huge ‘twilight’ blue cast.

You have to remember that NOT ALL adjustments you can make in the Develop Module will carry over in this process, but these 3 will.

4 600x282 HDR in Lightroom CC (2015)

Click to view LARGER IMAGE.

Ever since Lr4 came out we have had the ability to take a bracketed sequence in Lightroom and send them to Photoshop to produce what’s called a ’32 bit floating point TIFF’ file – HDR without any of the stupid ‘grunge effects’ so commonly associated with the more normal styles of HDR workflow.

The resulting TIFF file would then be brought back into Lightroom where some very fancy processing limits were given to us – namely the exposure latitude above all else.

‘Normal’ range images, be they RAW or TIFF etc, have a potential 10 stops of exposure adjustment, +5 to -5 stops, both in the Basics Panel, and with Linear and Radial graduated filters.

But 32 bit float TIFFs had a massive 20 stops of adjustment, +10 to -10 stops – making for some very fancy and highly flexible processing.

Now the, what’s a ‘better’ file type than pixel-based TIFF?  A RAW file……

1 600x375 HDR in Lightroom CC (2015)

Click to view LARGER IMAGE.

So, after selecting the six RAW images, right-clicking and selecting ‘Photomerge>HDR’…

2 600x375 HDR in Lightroom CC (2015)

Click to view LARGER IMAGE.

…and selecting ‘NONE’ from the ‘de-ghost’ options, I was amazed to find the resulting ‘merged file’ was a DNG – not a TIFF – yet it still carries the 20 stop exposure adjustment  latitude.

6 600x375 HDR in Lightroom CC (2015)

Click to view LARGER IMAGE.

This is the best news for ages, and grunge-free, ‘real-looking’ HDR workflow time has just been axed by at least 50%.  I can’t really say any more about it really, except that, IMHO of course, this is the best thing to happen for Adobe RAW workflow since the advent of PV2012 itself – BRILLIANT!

Note: Because all the shots in this sequence featured ‘blurred water’, applying any de-ghosting would be detrimental to the image, causing some some weird artefacts where water met static rocks etc.

But if you have image sequences that have moving objects in them you can select from 3 de-ghost pre-sets to try and combat the artefacts caused by them, and you can check the de-ghost overlay tick-box to pre-visualise the de-ghosting areas in the final image.

3 600x375 HDR in Lightroom CC (2015)

Click to view LARGER IMAGE.

Switch up to Lightroom CC 2015 – it’s worth it for this facility alone.

D4D4469 HDR 2 600x400 HDR in Lightroom CC (2015)

Click to view LARGER IMAGE.

 

Please consider supporting this blog.

This blog really does need your support. All the information I put on these pages I do freely, but it does involve costs in both time and money.

If you find this post useful and informative please could you help by making a small donation – it would really help me out a lot – whatever you can afford would be gratefully received.

Donations would help offset the costs of running this blog and so help me to bring you lots more useful and informative content.

Many thanks in advance.

 

Lumenzia for Wildlife

The Lumenzia Photoshop extension

Yet more on the usefulness of the Lumenzia Photoshop extension, the short cut to great looking images of all types and styles.

I had an email from client and blog follower David Sparks after my last post about this useful mighty Photoshop tool.

He sent these before and after rail shots:

20141002  D4S6303 900x599 Lumenzia for Wildlife

Before adding Lumenzia. Click for larger view.

20141002  D4S6303 Edit 900x599 Lumenzia for Wildlife

After adding Lumenzia. Click for larger view.

difference 900x599 Lumenzia for Wildlife

Comparison overlay – see how the left side of the image has that extra presence – and that’s just with the click of a couple of buttons in the Lumenzia GUI. Click to view larger.

Here is what David had to say in his email:

Andy, here is a before and after.  Processing was much, much faster than usual, using Lumenzia.

Thanks for bringing it to my attention….I’m working my way through your Image Processing in LR4 & Photoshop + LR5 bundle and enjoying it very much.

And as my friend and blog follower Frank Etchells put it:

Excellent recommendation this Andy. Bought it first time from your previous posting… at just over £27 it’s marvellous icon smile Lumenzia for Wildlife

What gets me puzzled is the fact that these Lumenzia posts have had over 500 separate page views in the last few days but less then 3% of you have bought it – WTF are you guys waiting for…

Get it BOUGHT – NOW – HERE

Please consider supporting this blog.

This blog really does need your support. All the information I put on these pages I do freely, but it does involve costs in both time and money.

If you find this post useful and informative please could you help by making a small donation – it would really help me out a lot – whatever you can afford would be gratefully received.

Donations would help offset the costs of running this blog and so help me to bring you lots more useful and informative content.

Many thanks in advance.

 

Colour Editing in Photoshop

Colour Editing in Photoshop using the Channel Mixer

I’ve just uploaded 3 video lessons on THE BEST way to do selective colour changes in Photoshop using the Channel Mixer.

This is a far better and more accurate way to change the colour of something whilst maintaining all its original tonality, and it is vastly better than the commonly touted Hue saturation method.

HueSat doesn’t do the job with 100% fidelity, and you are very limited in the colour choice.

Using the Channel Mixer method you can effectively make every single colour in the Pantone colour spectrum simply by using Pantone/RGB conversion figures.

If you watch the videos on YouTube it may take a minute for the HD play option to activate.

Part 1 is here:

Part 2 here:

Part 3 here:

The demo file can be downloaded on the link below:

https://dl.dropboxusercontent.com/u/87066369/Caterham.psd.zip

There are many instances where you might want or need to change the colour of an object in your image, and this is exactly what the Channel Mixer exists for; not for creating crappy black and white conversions as some crackpots think.

Give it a try for yourself by downloading the file and following along with the videos – the file has the path built into it, put these paths are simple to make with then pen tool.

Please consider supporting this blog.

This blog really does need your support. All the information I put on these pages I do freely, but it does involve costs in both time and money.

If you find this post useful and informative please could you help by making a small donation – it would really help me out a lot – whatever you can afford would be gratefully received.

Donations would help offset the costs of running this blog and so help me to bring you lots more useful and informative content.

Many thanks in advance.

 

Lumenzia – Not Just for Landscapes

Luminosity Masking is NOT just for landscape photographs – far from it.

But most folk miss the point of luminosity masking because they think it’s difficult and tedious.

The point, as I always see it, is that luminosity masking allows you to make dramatic but subtle changes and enhancements to your image with what are actually VERY fast and crude “adjustments”.

This in reality means that luminosity masking is FAST – and way faster than trying to do “localised” adjustments.  But the creation of the masks and choosing which one to use is what crippled the “ease factor” for most.

But with this new Lumenzia extension is so snappy and quick at showing you the different masks that, if you know what area of the image you want to adjust, the whole process takes SECONDS.

Let’s look at a White-tailed Eagle taken just 15 days ago:

Straight off the 1Dx it looks like this:

raw 1 of 1 900x600 Lumenzia   Not Just for Landscapes

RAW unprocessed .CR2 file (CLICK to view in new window)

Inside the Develop Module of Lightroom 5 it looks like:

camera 900x518 Lumenzia   Not Just for Landscapes

RAW unprocessed – (CLICK to view in new window)

A few tweaks later and it looks like:

Lr5adjust 900x518 Lumenzia   Not Just for Landscapes

Tweaks are what you can see in the Basics Panel + CamCal set to Neutral, and Chroma Noise removal in the Lens Corrections Panel is turned ON – (CLICK to view in new window)

Sending THIS adjusted image to Photoshop:

ps1 900x563 Lumenzia   Not Just for Landscapes

(CLICK to view in new window)

All I want to do is give a “lift” to the darker tones in the bird; under the wings, and around the side of head, legs and tail.

Using a BRUSH to do the job is all fine ‘n dandy BUT, you would be creating a localised adjustment that’s all-encompassing from a tonal perspective; all tones that fell under the brush get adjusted by the same amount.

A luminosity mask, or indeed ANY pixel-based mask is exactly what it says it is – a mask full of pixels. And those pixels are DERIVED from the real pixels in your image.  But the real beauty is that those pixels will be anywhere from 1% to 100% selected, or not selected at all.

Where they are 100% selected they are BLACK, and any adjustment you make BEHIND that mask will NOT be visible.

Pixels that are NOT selected will be WHITE, and your adjustment will show fully.

But where the pixels are between 1% and 99% selected they will appear as 1% GREY to 99% grey and so will show or hide variation of said adjustment by the same amounts…got it?

The Lumenzia D4 mask looks like it’ll do the job I want:

ps2 900x563 Lumenzia   Not Just for Landscapes

Lumenzia D4 mask (CLICK to view in new window)

Click the image to view larger – look at the subtle selections under those wings – try making that selection any other way in under 2 seconds – you’ve got no chance!

The “lift” I want to make in those WHITER areas of the mask is best done with a Curves Adjustment layer:

ps3 900x563 Lumenzia   Not Just for Landscapes

Select “Curve” in the Lumenzia GUI – (CLICK to view in new window)

So hit the Curve button and voilà:

ps4 900x563 Lumenzia   Not Just for Landscapes

The Lumenzia D4 mask is now applied to Curves Adjustment Layer – (CLICK to view in new window)

You can see in the image above that I’ve made a very rough upwards deflection of the curve to obtain an effective but subtle improvement to those under-wing areas etc. that I was looking to adjust.

The total time frame from opening the image in Photoshop to now is about 20 seconds!  Less time than the Lightroom 5 adjustments took…

And to illustrate the power of that Lumenzia D4 Luminosity mask, and the crudity of the adjustment I made, here’s the image WITHOUT THE MASK:

ps5 900x563 Lumenzia   Not Just for Landscapes

The effect of the luminosity mask is best illustrated by “hiding” it – bloody hell, turn it back on ! – (CLICK to view in new window).

And at full resolution you can see the subtleties of the adjustment on the side of the head:

ll lum 900x563 Lumenzia   Not Just for Landscapes

With Lumenzia (left) and just the Lightroom 5 processing (right) – (CLICK to view in new window).

If you want to get the best from your images AND you don’t want to spend hours trying to do so, then Lumenzia will seriously help you.

Clicking this link HERE to buy Lumenzia doesn’t mean it costs you any more than if you buy it direct from the developer.  But it does mean that I get a small remuneration from the developer as a commission which in turn supports my blog.  Buying Lumenzia is a total no-brainer so please help support this blog by buying it via these links – many thanks folks.

Please consider supporting this blog.

This blog really does need your support. All the information I put on these pages I do freely, but it does involve costs in both time and money.

If you find this post useful and informative please could you help by making a small donation – it would really help me out a lot – whatever you can afford would be gratefully received.

Donations would help offset the costs of running this blog and so help me to bring you lots more useful and informative content.

Many thanks in advance.

 

Lumenzia for Easy Luminosity Masking

Lumenzia for Easy Luminosity Masking..

I’m a really BIG fan of Luminosity Masking, and the ease by which you can use them to create really powerful adjustments to your image inside Photoshop – adjustments that are IMPOSSIBLE to make in Lightroom.

For a while now I’ve been selling a luminosity mask action set for Photoshop, and up until a week ago I had plans to upgrade said action set to produce even more custom masks.

That is until a good friend of mine, Mr. Omar Jabr, asked me if I’d come across this new product, LUMENZIA, that made the production and deployment of luminosity masks and their derivatives EVEN EASIER.

intro 900x624 Lumenzia for Easy Luminosity Masking

An original RAW file open in Lightroom (right) together with the final image (left) – 99% of the “heavy lifting” being done in Photoshop using the Lumenzia Extension and it’s luminosity masking functions.

In all honesty I am so excited about this amazing software extension that I’ve abandoned all plans to further develop my own action set for Photoshop – to do so would be a truly pointless exercise.

There is so much more to Lumenzia than the production of the standard 4 or 5 Darks,Lights and Midtone luminosity masks that mine and other available action sets produce.

To get an idea of just how powerful Lumenzia is just click HERE to visit the applications home page – and just buy it while you are there; purchase is a “no brainer” and one of those digital imaging JDI’s (just do it)!

The inclusion of a luminosity masking function based on the Zone System gives you instant recourse to masks based on Ansel Adams 11 zone system of scene brightness – a classic approach to the quantification of subject brightness range created by arguably the greatest landscape photographer the world has ever known – IMHO of course.

AAZone Lumenzia for Easy Luminosity Masking

In order to instal Lumenzia you will need to install the correct Photoshop Extension Manager for which ever version of Photoshop you are running – CS6, CC, or CC2014 (it is not intended to be installed on CS5 or lower).

1. Buy Lumenzia

2. Follow the download link, and download the .Zip folder.

3. Extract the folder contents.

4. Locate the “com.lumenzia.zxp” file in the extracted contents, right click and choose Open with: Adobe Extension Manager v.xx

You should see:

a Lumenzia for Easy Luminosity Masking

Click Install, and you should see:

b Lumenzia for Easy Luminosity Masking

If you are running Mac OS 10.10x Yosemite you may have a slight problem with the CC2014 Extension Manager not being able to find the application pathway to Ps CC2014.  If you get a message from the Extension Manager waffling on about needing Photoshop v11 or higher don’t stress, the fix is a little brutal but really simple:

Go Applications>Utilities>Adobe Installers and UNINSTALL (that’s right!) BOTH Photoshop CC2014 and Extension Manager CC2014, then log back in to your CC account, go to the Apps tab and re-install Photoshop CC2014 AND Extension Manager CC2014 sequentially – that will cure the problem and only take about 5 or 6 minutes.

Open a RAW file in CameraRAW, or better still Lightroom. Get your camera calibration and contrast under control as I’ve banged on about so many times before, negate any chromatic aberration and do a bit of effective noise reduction if needed, then send the image to Photoshop:

3 900x563 Lumenzia for Easy Luminosity Masking

Go Window>Extensions>Lumenzia

Go Window>Extensions>Lumenzia and the Lumenzia interface will appear – I like to drag it into the right hand tools palette so it’s not encroaching on the work area.

The first thing that amazed me about Lumenzia is the fact that you can create luminosity masks without creating 12 or 15 separate Alpha channels with the image – this makes a HUGE difference to the file size of the image, not just from the disc space PoV but it can also have file handling speed benefits in terms of tile rendering speed and scratch disc usage – if you don’t understand that just think of it as a GOOD thing!

For example:

5 900x560 Lumenzia for Easy Luminosity Masking

The final adjusted image (prior to a couple of tweaks in Lightroom) on the left is 271Mb including all layers being intact; the image on the right, though not yet processed, has been prepared for processing by running a luminosity mask action set and developing a stack of Alpha channels; it is now over 458Mb:

6 900x562 Lumenzia for Easy Luminosity Masking

…just because of the Alpha channels. And we have also got 50 steps of History that have to be retained by Photoshop; as you’ve now realised, the joke is that it’s double the size of the Lumenzia processed image and we haven’t begun to start making any adjustments yet!

There is lot’s more to Lumenzia, such as surface sharpening and easy dodge and burn layer creation – it’s going to take me a week to digest it all.

Prior to working with Lumenzia my one question was “how good are the masks” – well they are pixel-perfect.

Creating pixel-perfect luminosity masks is the most tedious of jobs if you do it the maual way – so much so that most folk take one look at the process and go “No thanks…..”

Photographers like myself couldn’t really help alleviate the tedium until the advent of CS6 which gave us the ability to write an ACTION that involved the operation of a PREVIOUSLY recorded action – so the luminosity mask action set was born.

But the developer of Lumenzia has topped it all by the proverbial country mile and given us a totally unique way of making the tedious and complex very easy and simple.

Once you have made your purchase you’d do well to go and watch the developer videos that are available online; you will get links to the training and support pages in your purchase receipt.

And to top it all off we can even generate Alpha channels and selections if we want or need to, and we can mask on the basis of Vibrancy and Saturation; yet another processing wheeze known by few, and used by fewer still.

The developer has given me permission to demonstrate and teach the deployment of Lumenzia, and to promote it as an affiliate.  I’ve been offered affiliate-ships before but have rejected them in the past because basically what was being peddled was either crap or too expensive; or BOTH.

But whatever you think the opinion of yours truly is worth, I can honestly say that Lumenzia is most definitely NEITHER of the above – it’s that good I’ll never use anything else ever again, and at under 40 bucks you’re going to make one hell of a difference to your images with so little effort it’s unreal.

Click HERE to buy and download

LUMENZIA – BUY IT – go on, get on with it!

lum Lumenzia for Easy Luminosity Masking

Lumenzia GUI for Photoshop CC2014

 

Please consider supporting this blog.

This blog really does need your support. All the information I put on these pages I do freely, but it does involve costs in both time and money.

If you find this post useful and informative please could you help by making a small donation – it would really help me out a lot – whatever you can afford would be gratefully received.

Your donation will help offset the costs of running this blog and so help me to bring you lots more useful and informative content.

Many thanks in advance.