On Fri, 26 Mar 2004 09:29:16 -0800, Chip Louie wrote: >> > > >Hi Cotty, > >There are a couple of generations of Canon's IS, the first generation was on >the old lenses like the EF 75-300IS and EF 28-135IS zooms. These were slow, >mediocre performing lenses optically that were made sales successes by with >addition of IS. These lenses have only one mode of operation useful only >for single shots taken in one-shot AF mode of stationary subjects. I've >tried to use the EF 28-135IS lens but this lens is too soft to use at wide >open apertures like I can with my "L" zooms. The EF 28-135IS is also very >slow optically (f3.5-5.6, the 3.5 is deceiving as it get slow very quickly >as you zoom), the AF is slowish and once you get past 100mm images get soft >very fast unless stopped way down to min. f/11-f/16. The first generation >IS lenses also had some bad characteristics if moved while IS was on. The >finder image would display jitter or shake because the lens was trying to >correct for camera motion it could not compensate for. This generation also >slowed down AF performance when trying to gain AF and could spuriously start >jittering in the finder if moved while IS was on. I was disappointed in >these lenses to say the least. ......snip > > >Cheers/Chip > > >
Hi Chip Great write-up!! I been experiencing the same "softness" issues with my 28-135, it's good to know I'm not the only one. I wish Canon would bring out an 'L' lens that would cover this range. I know Canon recently introduced a 28-350, but that's overkill (plus it's a bit heavy and pricey). Rob * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
