Wouldn't it make more sense to use "Market ISO" for the input here, and have CHDK do the conversion to "Real ISO" behind the scenes?
After more than six years of forum comments on this subject
When I take a picture with an override of ISO 80, does the camera actually get set to a lower ISO?
All we need is someone to come up with a coherent, consistent way to do it that doesn't require special code for each camera.
press_half() -- includes wait for get_shooting()sv=get_sv96() -- realsvdiff=iso_to_sv96(get_iso_market())-sv -- real to market differencesvmin=iso_to_sv96(s)-svdiff -- min sv ISO 100 market defaultsvmax=iso_to_sv96(z)-svdiff -- s and z are script input parameters-- to output market ISO from sv96, you do this:sv=411 -- testprint(sv96_to_iso(sv+svdiff)) -- prints market ISO
In my cameras, it is 59.
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