f-number equivalent between m43 and FF

Started Mar 25, 2014 | Discussions thread
Scott McMorrow Regular Member • Posts: 366
Simpler yet. Photons are the signals.


Photons are the "signal".  Each photon carries information, and is therefore a signal.  A camera sensor records those signals on a sensor that integrates photons/unit area over time.  A photographic sensor is just one way to measure the signal.

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