spootdad Portage, US Registered since 27th Dec 2006
Sun 25-Sep-11 01:14 AM
#17. "RE: Aperture, Shutter, ISO, and Illumination Relationships" In response to In response to 4
Very interesting Hal. I like the "cue card" and this formula, although I do have two questions: Concerning
"K = Metering Constant: = 12.5 for some reflected metering systems."
I assume that your comment means that K is industry dependent so not the same for Nikon as for Canon, and so on (I don't think you were referring to hand-held meters, although I may be wrong). So, a) Where would you look to find this value for one brand vs another, and b) Is it reasonable to expect that it is essentially constant across the different cameras in a company's lineup? Actually, a third question: Is this K determined from the physics of the problem or from another source? Lee From the rocking of the cradle to the rolling of the hearse, the going up was worth the coming down