Quote: It would make no sense for Nikon to apply the dark subtraction already clipped - for the reasons you have already mentioned. Also, it makes sense to apply the Raw algorithm at the time the raw is created. Since Nikon, I believe, only creates one Raw for 1 image plus it's related in camera dark, it makes sense to apply the algorithm - clipping included - at the time the raw is created.
Quote: BTW, I have a K-01 (same sensor IMX071), the OBP values are quite different.
Quote:That's a great idea to use the optical black region for calculating the read noise and dark current - I'll give that a try myself.One question: if you calculated a dark current of 0.007eps at -1C then doesn't 0.15eps at 21C seems a little high if the doubling temp is 6-6.5C?Mark
Quote: Are these good values? Can you give me any insight to further analyze my camera because my images are so noisy and I am trying to find out if its my camera or my processing. Thanks
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Quote:The exposure is determined by the camera. The raw files may look very dark, but the JPG files all have the "correct" brightness (in the middle of the histogram shown on the camera's LCD picture info). So they are by no means under-exposed.
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A Beginner's Guide to DSLR Astrophotography
An Advanced Guide to DSLR Astrophotography
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