>I've had the same problem with low-light focusing and that is one reason I got the 420EX. But what I don't understand is that the described conditions (1/30 f/4.5, ISO 800) is not that dark, it is about EV6-7. Since that is nowhere near the EV1 AF limit of the Elan 7, I wonder what gives it so much trouble? > >Tom D
In fact, the lower limit Ev 1 ISO 100 with a 50mm f/1.4 lens. With a f/4.5 lens, that is 3.5 stops slower the limit is Ev 4.5 ISO 100 1/30 f/4.5 ISO 800 is Ev 6.5 ISO 100 So, you are only 2 stops from the limit for that lens. Best regards Vicente * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
