In manual mode, the F100 & N80 control the aperture with the index finger and sp with the thumb. This can be switched, via a custom function, on the F100.
BR From: "Dave Miers" <[EMAIL PROTECTED]> I only have minoltas and the PZ - ZX pentax line to compare this too, but if I were take a guess here it may be an industry standard that the index finger controls the shutter with the thumb controlling the aperature as the aforementioned products lines conform to this standard.. Maybe someone can tell me if canon and nikon also conform to this standard as well.
