Sony colors vs Fuji colors

Started Mar 13, 2020 | Discussions thread
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JimKasson
JimKasson Forum Pro • Posts: 32,144
Sony colors vs Fuji colors
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There was a recent thread here on the title subject. I got interested in seeing what kinds of differences there were between, not only Sony and Fuji, but also Nikon, using a profile maker attempting accuracy, but not going to extremes like shooting the target in a black velvet tent and building 3D lookup tables (LUTs) that don't take kindly to exposure bending. I shot CC24 and CCSG targets with an ordinary 2-strobes-on-opposite sides-of-the-target-at-45-degree-angles-to-the-target-plane setup. I used a CC24 target for evaluation. Here are the results in CIELab Delta-E 2000, with some other profiles thrown into the mix:

The Z7 and a7RIV are neck and neck on two sets in the center, for which I used Lumariver in reproduction mode with 2.5D LUTs. The GFX is almost twice as bad.

If you are unfamiliar with the relative importance of the camera and the profile/raw developer in determining color, you might want to read this:

https://blog.kasson.com/the-last-word/roles-of-camera-and-raw-developer-in-determining-color/

There was very little difference between the results with the CC24 24-patch training set and the CCSG 140-patch training set, but the CCSG produced slightly better results, so I did pairwise analysis of the chromaticity errors:

It is interesting that, particularly with the Z7 and z7RIV, the errors are in the same direction, making the cameras closer to each other than they are to the reference.

In all cases, the effect of using a profile not meant for reproduction is more significant than the difference between cameras using the reproduction profiles.

Lots of details in the links below:

https://blog.kasson.com/nikon-z6-7/camera-differences-in-color-profile-making/

https://blog.kasson.com/nikon-z6-7/chromaticity-shifts-with-the-a7riv-z7-and-gfx-100/

I'd be happy to answer questions here.

Jim

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 JimKasson's gear list:JimKasson's gear list
Nikon Z7 Fujifilm GFX 100 Sony a7R IV Sony a9 II +1 more
Nikon Z7
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