>i'm trying to figure out how to manually (not using the dep function on my >elan II) focus to incorporate hyperfocal distances with my 28-135IS. as far >as i can tell, the distance window isn't scaled to show focus distances for >different f stops. Yes. >do any of you have rules of thumb or handy tricks for hyperfocal focusing >with this lens, or is the best solution to always use a chart? If you only need to use the DOF marks for hiperfocal focusing, I suggest you to use an hiperfocal table. Beware because the 28-135, because of the internal focus, changes the focal length while focusing, so DOF calculations will be wrong at close focusing distances. >by the way. i am thinking of picking up the 17-35mm. do all ef lenses have >the same kind of distance window (lacking f stop focus depths) due to >canon's auto dep function? Yes, but that's not because of the auto-dep. The DOF limits change as the focusing distance changes. In a two touch zoom it's very difficult (sometimes impossible) to put DOF marks. Primes are another history. Most primes feature DOF marks. OTOH the short throw of the focusing ring on most AF lenses make the focusing distance window less usefull than the one on manual focus lenses. >thanks in advance for your help. > >devon Best regards Vicente * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
