NK Guy wrote: > On Thursday, October 24, 2002, at 11:27 PM, Rivlin,Anatoly wrote:
> > I just got a russian made zenitar 16mm/2.8 manual fish-eye lens for my > > eos7, shot a trial roll to determine the correction factor for exposure > > (the lens is fully manual) and found a curious thing i cannot explain. > > may > > be someone can elucidate me on that. while available light exposure > > requires +3 stops compensation, shots made with flash did not change > > with > > compensation. i mean, +3 or -3 stops did not make any difference - they > > were all exposed correctly. by the way i was using pop-up flash, not an > > external unit for this test roll. > Interesting. So presumably the TTL flash meter in the camera does not > have the exposure flaw, but the evaluative meter does. The test for > this theory would be to use an E-TTL capable flash unit. If you find > your flash photos are not exposed correctly when you use E-TTL flash > then the theory seems likely to be true. Anatoly, As the built-in flash only covers up to, I think, 28mm wide, surely there must be either a lot of fall-off at the edges of the frame, or a hot-spot in the centre of the frame. Cheers Keith * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
