<<<SNIPPED>>> > > > > > > > > There seems to be a nearly Sigma-like sample variation with this > lens. As I > said in my reply to Peter, mine's as sharp as it can be. In fact, I did a > little comparison similar to yours, and nearly took my 100-400 back! The > 28-135 was sharper at that focal length (100mm) than my 100-400, both wide > open. And, unlike Chip's experience, my 28-135 focuses faster > than any lens > I have, with the exception of my 50mm f1.8 MkII and 100 f2. And the > difference between it and the 100 f2 is negligible. > Skip Middleton
Hi Skip, Which begs the question, what lenses and bodies do you shoot with? I did mentioned that I noticed differences in the EF 28-135IS but none of them were more than just good past 100mm or so and certainly no better than the EF 28-105USM another relatively average, but useful lens with a bit faster lens speed than the 28-135IS. As I've said in the past I always suggest use tranny films for lens comparisons. Judging by print is simply much too prone to operator and lab variations to see repeatable results. My film shooting with the EF 28-135IS was done on EOS 1N/HS, EOS 1N/RS and EOS 1V/HS bodies. Several years ago during the time I could borrowed various EF 28-135IS lenses from my photobum friends I was shooting with an EF 15 2.8, EF 20 2.8USM, EF 50 1.4USM, EF 50 1.8 series I, EF 85 1.8USM, EF 135 2L, EF 300 2.8L, EF 300 4L non-IS, EF 300 4L IS, EF 400 2.8L, EF 17-35 2.8L, EF 28-70 2.8L, EF 28-105 3.5-4.5USM, EF 70-200 2.8L, EF 1.4X, EF 2X. This is where I get my image quality reference points from. Since going digital I've simplified my lens quiver tremendously and now manage to make due with an EF 15 2.8, EF 50 1.4USM, EF 85 1.8USM, EF 300 4L IS, EF 300 2.8L, EF 16-35 2.8L, EF 28-70 2.8L, EF 28-105 3.5-4.5USM (lives on an EOS 1 for casual and street shots), EF 70-200 2.8L IS, EF 1.4X and EF 2x II converters. I've tried a lot of glass and these are the lenses that work the best for me. To paraphrase Peter K's favorite quote "I like them so I use them." Cheers/Chip * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
