Quote:
Originally Posted by Atmos
When binning with a CCD it does work that way as it does a signal amplifier when it bins while keeping the same read noise. With DSLRs though, from what I have heard it doesn't work so well, that's just because binning isn't a good idea with them in general.
As for drizzle it doesn't make a difference because the calculations are for each individual image. It is a calculation of how much sky each pixel covers. As dizzling is a group of images with a slight offset, each individual frame is is what is being calculated.
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Very interesting. If drizzle does not affect sensitivity... then does that mean that you can bin 2x2 (with a CCD) to get a 4 fold increase in sensitivity and then follow that with a 2x drizzle to recover the lost resolution. Two bites of the cherry as it were...?