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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 03 May 2020 (Sunday) 18:13
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Are accurate colours actually accurate?

 
Wilt
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Post edited over 3 years ago by Wilt. (4 edits in all)
     
May 29, 2020 16:52 |  #76

digital paradise wrote in post #19070414 (external link)
This is the whole thing about colour accuracy. These are the tests. I read and watched a few videos where people suggested to use the Adobe DNG Profiler. It is somewhere between Adobe STD and CPP.

Adobe Standard

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IMAGE LINK: https://flic.kr/p/2j6y​329  (external link) AS (external link) by MPC (external link), on Flickr

Adobe DNG profiler using CPP chart

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CPP software

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IMAGE LINK: https://flic.kr/p/2j6v​sGz  (external link) CCP (external link) by MPC (external link), on Flickr


Just for grins, I just shot my Colorchecker Passport RAW in open shade. Actual shot ISO 100, 1/100 f/4. Processed in LR using my standard settings of Vibrance +10, Saturation, +20, ALL other settings 0.
I set WB by LR sampling the Neutral skin and Neutral scene patches in the Creative Enhancement areas of the target...the WB value ended up at 5700K. I output an sRGB image for POTN...

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I wanted to see how visually different/similar your results looked, compared to an absolutely 'stock' LR interpretation of 7DII images.
It initially seemed that I see in my own shot the very subtle differences in color patches as you go left-to-right, as well as very distinct differences between the Portrait row above and the Scene row below. It seems to better mimic what I see with the naked eye looking at those patches on the target itself, whereas my perception is that your shots have lost saturation of those very subtle colors....but it appears that simply by lowering Exposure on your shot by -0.24EV brought the 18% grey patch to the density values that I usually find to better mimic inherent brightness and then the colors in the subtle Enhancement areas are more apparent.

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digital ­ paradise
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Jun 05, 2020 08:37 |  #77

Sorry I missed your reply. Must has been distracted. That never happens :-) Most of the documents/threads I have read say exposure is not critical as long as nothing is clipping. You are just capturing the light spectrum. It doesn't hurt to get a good exposure.

The other interesting thing is one of my posts here there is a link to one of Digital Dogs replies about either using CCP or Adobe Digital Negative Profiler. Both produce different results and he said to pick the one your prefer. So what about accurate? Again this just tells me that profiling is about matching your camera to the monitor and printer.

I like the Adobe Digital Negative Profile so that is my new import preset for now. It is pretty close to the new Adobe Colour profile but a bit punchier. I still prefer Canon colours but who knows if whatever is going on between Canon and Adobe will be resolved regarding CR3 files. I'm getting used to it before the R5 or a less expensive body comes out. Even then when I apply Auto it pretty much changes everything anyway.


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Are accurate colours actually accurate?
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