How to choose shutter speeds, f values and ISO for a script?

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Offline jpd

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How to choose shutter speeds, f values and ISO for a script?
« on: 22 / September / 2015, 11:53:21 »
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Hello,

I have a Canon Powershot D30. I wish to write a script that will allow to take pictures in all combinations of shutter speed, aperture and ISO. What is the easiest way to work out the minimum, maximum and intervals of these 3 parameters available on this camera?

If Iam to use default values like those found in the CHDKPlus script (http://chdk.wikia.com/wiki/CHDKplus) then I've found there can be some disparity. For example a shot with an f value of 4 has exif information saying that there is an aperture value of 3.9.

Any help much appreciated.

Thanks.

 

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