How does the D3 achieve such high ISO?

Started Feb 17, 2008 | Discussions thread
DSPographer Senior Member • Posts: 2,483
Re: Who doesn't get it

Sensor noise for Canon and and Nikon D-SLR cameras comes from the photosite pre-amplifier not from dark leakage (dark leakage is negligible for exposures faster than 1s). This means that sensor noise is independant of photosite area so bigger photosites are more sensitive.

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