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shot noise, and long exposures
Hi guys
I know this has been discussed by Ray quite a bit and I see his argument that when shot noise dominates an image exposing for longer has no benifit. Logically thinking about this at work at the moment and I think that it will still be better, here is the reason.
A long exposure that is already dominated by shot noise will be averaging the shot noise if it exposes longer. This would mean that stopping the exposure and starting another so you can stack more images to reduce shot noise would effectively already be happening in a longer exposure.
If I have this wrong I'm happy to be told so, just trying to logically understand what's going on.
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