On Feb 1, 2008 3:41 PM, Mike Hord <mike.hord@gmail.com> wrote:
> I really want to understand this- how does increasing the number
> of pixels increase the noise level?  Is it due to the increased
> number of charge transfers required to read out the contents of
> each well?  Or something else?

Each sensor element is inherently noisy, the path from the element to
the amplifier is noisy, and the A/D converter is noisy.  As the sensor
gets smaller, the noise level doesn't really go down, but the signal
level does go down.  So in the end the signal to noise ratio gets
worse.

-Adam
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