Quote:
Originally Posted by RB
Put the DSLR in P (Program Mode).
Set ISO to 100.
Take an exposure and check the histogram is 1/3 rd of the way along from the left.
Take a lot and an odd number of flats.
Also I move the camera/scope slightly around the Flats Screen/Light Panel every few shots to avoid any hot spots.
Can't miss.
RB
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Mind if I ask - Is there a benefit to doing this over Av mode? Why do you need an odd number of flats?