>>3733555Best post, very correct, best bait for "I know everything but actually nothing".
The conclusion is: Don't be afraid of high iso, but set it as the last variable to be increased to make sure that the available light is captured to the maximum.
My addition is: You will be surprised how little noise your photo produces.
If there is still too much noise, take several photos and stack them, average the shots pixelwise. Night modes on smartphones and cameras (particularly entry-level cameras or P&S) offer this for jpg files already built-in.
>>3733630Violet colored noise is often caused by poor suppression of thermal effects. Typical for high ISO values, not necessarily a defect, often simply caused by approaching the limits.
