> Erwin Harkink (ELN) <[EMAIL PROTECTED]> wrote > > > Does a digital body give some converted (to 35mm film format) lens info, like > > focal length, to the flash??? > > > My guess is it wouldn't need to. The CCD/CMOS chip being smaller than a 35mm > frame, only the central portion of the image that comes through the lens is > captured. Therefore the light from the flash would cover it.
Thing is, excessive flash coverage will waste battery power, and also might have other side effects, like e.g. bounce light. I have been wondering about this myself. If I use a 50mm lens on the D30 with the 550 flash, will the D30 send "fake" information to the flash telling it to zoom to 80mm? Or will it just zoom to 50mm and waste approx. 40% of it's energy? I haven't figured out this one. But then again, flash TTL is so inconsistent with the D30, why bother (almost). Lars -- Lars Michael [EMAIL PROTECTED] 87GT http://www.larsmichael.com/ * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
