1 electron = 1 photon?

Started Apr 12, 2013 | Discussions thread
Shop cameras & lenses ▾
Jack Hogan
Veteran MemberPosts: 4,923Gear list
Re: 1 electron = 1 photon?
In reply to wchutt, Apr 14, 2013

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.

Reply   Reply with quote   Complain
Post (hide subjects)Posted by
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow