1 electron = 1 photon?

Started Apr 12, 2013 | Discussions thread
OP Jack Hogan Veteran Member • Posts: 6,602
Re: 1 electron = 1 photon?

wchutt wrote:

This particular issue is better addressed using the wave model for light.

The electrical component of  the  three-component light wave generates the electrons in the sensor site. The results of frequency and amplitude can be included more conveniently.

Yes, I like to think in waves until just after the CFA and various lenses/filters.  But then you hit silicon, which supposedly produces a discrete number of electrons, whose number we try to backward engineer through shot noise.  So understanding the exact conversion process in quanta helps.

There are even Unity Gain proponents (mainly astrophotographers I understand) who suggest that there is no poiint raising gain (camera ISO) beyond where one electron is equal to one ADU.

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