Digital noise is due to sensor heat <i>and</i> optics. I didn't think it
important to make the distinction because I was merely offering a work
around based on my experience.
Allan
Moose wrote:
>
>> The noise and grain associated with low-light
>> photography is really, in large part, merely due to prolonging the
>> exposure time long enough to allow the highlights to invade the shadows.
>> They do so in a defused manner that causes weak, grainy shadows.
>>
> I don't think this explanation for the observed effect will withstand
> scientific scrutiny, but it doesn't matter for your point, as the result
> is the same.
>
>
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