Ricoh GR IV noise profiles#20360
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Thanks! Any chance you can split this into separate pull requests? |
andriiryzhkov
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The noise profile doesn't seems good to me. What was the actual images taken to create it? |
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This is archive with processing result darktable-noiseprofile-20260216.tar.gz |
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On the "standard deviation" graph the green line should be close to the brown line (mean = 1). As you can see this is not true and the deviation from the mean is already quite important at 300 ISO. My bet is that you don't have enough transition on the bright side of your picture. You really want full black on the left, and a smooth transition from middle tones to the highlight. Please try again with a better input. TIA. |
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Add noise profiles for Ricoh GR IV (ISO 100–204800, 34 profiles)
Tested locally on multiple files - looks good to me. In-camera noise reduction was turn-off.
noise_result.pdf