C100 Mk2 White balance test (this camera needs warming up) at DVinfo.net

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Old September 10th, 2017, 10:17 AM   #1
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Join Date: May 2016
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C100 Mk2 White balance test (this camera needs warming up)

Possibly of interest...

I've noticed my C100mk2 wants to pull towards blue/magenta. Here's a white balance test that seems to confirm it. White balance settings in the bottom right, then the correction applied by Resolve in the bottom left (using the white balance picker on the top right square, *correction bypassed in the images*). Image linked to below.

AWB is very blue, with a magenta tint.

Applying the same temperature in custom WB gets closer and, weirdly, is more accurate along green/magenta (AWB should get this closer).

The daylight preset (5500K) is much more accurate.

Finally, a grey card reading gets closest, just a touch too warm/green. When I tried this test for the first time, the grey card reading was almost perfect, perhaps because I filled more of the frame with the grey card.

Camera was ABB-ed. Conclusion - assuming Resolve is accurate, beware of AWB with it's blue/magenta tendencies. Other picture profiles might do better. C-log certainly seems warmer, with less pull towards magenta, but I haven't tested it.

PS. Can anyone manage to upload images on this forum....?

https://www.dropbox.com/s/dlaa43obef...-test.jpg?dl=0
Ben Johnston is offline   Reply With Quote
Old September 12th, 2017, 09:05 AM   #2
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Re: C100 Mk2 White balance test (this camera needs warming up)

I have noticed that as well. I'm surprised its so much different than the MK 1. Matching the 2 is tricky
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Old Yesterday, 09:53 AM   #3
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Join Date: Feb 2006
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Re: C100 Mk2 White balance test (this camera needs warming up)

You are aware that you can program in RGB offsets easily in your picture profiles, right? While it make take some experimentation, the C100 and C100 MKII can be color matched and I agree with your assessment, the C100 MKI veers much more toward red with a yellow bias to skin tones while the C100 MKII is decidedly cooler and more magenta skin tones. Just shoot some chip charts, tweak and customize your picture profiles and you should be able to arrive at colors that suit your preference.
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