On Mon, 30 Dec 2002 21:49:41 -0500, you wrote: >> Questioning whether I really understand this. With E-TTL, is setting >> FEC doing anything other than altering the flash-to-ambient ration? >> I've been assuming that when I set, say, -2 stops of FEC, I'm simply >> reducing flash output relative to the ambient exposure - in effect, >> creating fill flash. But like so many things about E-TTL, I could be >> teribly wrong! And does it act differently in P, Tv, Av and M modes? >> I'm using an EOS 33/Elan 7. > >Ken, > My understanding is that in P mode, a FEC-2 reduces the exposure by 2 >stops, because there is no balancing going on. In the other three modes, >then you are correct. Please also note that over EV 10 or so, there is some >automatic FEC built in--depending on the camera one can disable. The best >description is contained in the following article. Each time I read it, I >pick up something else. > >http://photonotes.org/articles/eos-flash/ > >Dave Buyens
Thanks, Dave. That gives me a place to start experimenting. And rthe article looks great! Huge. I'll be checking it out. Ken * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
