[troypiggo (Troy)]

I have a lightbox for flats, and while it does have a brightness adjustment, even at low settings I only need pretty short exposures. Read somewhere that it is good to get flat exposures a few seconds long though, to do with the shutter affecting exposure and the longer the exposure, the less it will come into play? That makes sense to me, but I don't know how fast this shutter is.

On a DSLR you can take shots 1/1000s and the shutter isn't seen. Wondering how fast these CCDs can be?

I did some test flats .1s and I think faster, couldn't notice any visible issues. Am I missing something?