Digital BW, The Print

Camera color capabilities are a slippery area; capture devices don't have a gamut, per se, only a response range. So my goal here is not to map the gamut of these devices (a non-sensical task), but rather to show their response on practical colors. Both the red shirt and the cyan sky are within sRGB. If the classic "flavors" of Canon and Nikon cameras can be shown with these "web friendly" colors, then chasing fluorescent greens isn't really needed to make my case. 

AdobeRGB does nothing to change this, as it shares both the red and the blue primaries of sRGB; and ProPhoto is not going to fly with eight-bit-per-channel samples, as it is so big posterization occurs. So the solution I chose was in-gamut color samples that retained the same visible effect in sRGB that they showed in Lightroom's linear ProPhoto space with both a wide gamut display, and a standard gamut display. I can live with those examples. Clearly you are looking for something else, but my goals of comparison and correction are met nicely by the examples in the article. 

When all is said and done, the points I hope people will remember is that Canon and Nikon color aren't really from different planets, and that a bit of capture calibration can match them nicely.

C. David Tobie
Global Product Technology Manager
Imaging Color Solutions
Datacolor inc. 
cdtobie@datacolor.com
www.datacolor.com

On Aug 28, 2012, at 12:50 AM, "jimbo" <mrjimbo@...> wrote:

> Hi CD... Sadly yes I do .. I just imported (2) 16GB cards from a 3 day shoot ....only 800 images.. again constructively .. I know how hard you work at this.. It's more about evidence and proof to help bring credibility to support all your efforts, ok.?. Our camera's go well beyond sRGB ... Possibly.. a solution might look like taking the raw image and convert it to a tiff then down sample it to something more manageable for your band width and tag it Prophoto or even adobe98 ... That should not affect the colors.. I understand the complexity of it all ..I just feel, particularly in this case, I could get something more meaningful out of it with the added material.. 
> Anyway nuf said.. I meant it constructively.. and I always enjoy seeing the things you toss out there for us.. Thanks...
> 
> jimbo
> 
> ----- Original Message ----- 
> From: CDTobie 
> To: DigitalBlackandWhiteThePrint@yahoogroups.com 
> Sent: Monday, August 27, 2012 9:10 PM
> Subject: Re: [Digital BW] Re: [EpsonWideFormat] Article on Canon 5D Mark lll and Nikon D800 color
> 
> Hi Jimbo,
> 
> >>Constructively.. the as shot raw images or a tiff variant from each should have been available for download.
> 
> Do you realize how large a D800 raw file is? I don't have the bandwidth to offer such samples to thousands of viewers. I made sure the sample images I selected showed clear color variations on an sRGB display before using them. The visual comparisons are valid. Thats about all I can offer in a blog article. Perfection will have to occur somewhere else. Thanks for taking a look.
> 
> C. David Tobie
> Global Product Technology Manager
> Imaging Color Solutions
> Datacolor inc. 
> cdtobie@...
> www.datacolor.com
> 
> On Aug 27, 2012, at 10:19 PM, "jimbo" <mrjimbo@wispwest.net> wrote:
> 
> > Constructively.. the as shot raw images or a tiff variant from each should have been available for download.
> 
> No virus found in this message.
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> 


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