"Sharkmelley flats" for OSC/dslr

[decay]

I didn't think the situation described was Mark taking lights in a non-linear range of his DSLR, nor that he was taking low ADU flats and ran into this issue. I thought the low ADU flats came along later

Oops . You’re right, Mike. I reread Mark’s text and there’s not a single word about low ADU values/ranges in there. Ron mentioned this in his initial post. Ron, where did you get that from?

Nonetheless, I suppose, you already would have noticed if your camera had such a strong non-linearity? I’m curious to see your results.

Dietmar.