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Great article. Thanks, Eddie.
I'm pretty much a beginner with darks and flats with my DSLR and still have lots of queries. The discussion about the quality of light for flats is interesting. I've been doing T shirt flats with the scope pointed at a wall illuminated by a tungsten bulb. I was worried that these had a pinkish colour cast and wondered if I should change them to grayscale before using them, but Mike Unsold said that it didn't matter when the automatic image processing routine in Images Plus dealt directly with the RAW frames. Does this mean the nature of the light source doesn't matter?
Also, Jerry Lodriguss seems to be saying that if you keep your light source sufficiently bright that the flat exposure can be under 1 second with a low ISO, then it's not necessary to take extra dark frames for the flats. I hope this is so because an extra set of darks for the flats seems like one step too many. Life is too short.
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