SD series exposure algorithms? - General Chat - CHDK Forum

SD series exposure algorithms?

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Offline hoodsmom

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  • 3
  • SD750 101B
SD series exposure algorithms?
« on: 27 / September / 2008, 16:06:28 »
Does anyone know where I might gain insight into the algorithms used by the Canon engineers to determine aperture and speed, but I sure can't figure their algorithm out.  Or, to put it another way, short of using CHDK firmware, can I trick my SD750 into using an aperture that **I** and not the camera want?


Offline Hacki

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  • EOS 80D
Re: SD series exposure algorithms?
« Reply #1 on: 27 / September / 2008, 16:18:05 »
Your camera does not have a controllable aperture. There's only a hole with a fixed width somewhere in your lens assembly..

The whole IXUS (aka SD*) series does not have an aperture. Some of the older A* models dont have apertures too.


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