Hi Lawrence,
IMO the best possible zoom combination is the one you are considering namely the EF 20-35 3.5-4.5USM, EF 28-70 2.8L and EF 70-200 2.8L lens combination. I have used my EF 28-70 2.8L for 3 years now and there is no dust inside the lens, it's my favorite lens and is almost always mounted on one of my EOS 1N bodies when I'm shooting. A fantastic lens, no less amazing than the EF 70-200 2.8L which is my second most used zoom lens. While I use the EF 20-35 3.5-4.5USM a lot it I'm using the 20mm end a lot I often will switch to an EF 20 2.8USM for its better linear distortion, slightly sharper corners and lower light loss. I have used the EF 28-135 IS and it is definitely not in the same league as the 28-70 2.8L in terms of contrast and apparent sharpness and IS offer no real advantage in terms of lens speed because the IS lens will have plenty of subject caused motion blur in low light when you need it. The EF 28-135IS is also not real impressive used wide open while the EF 28-70 2.8L while not as sharp as when used a stop or to slower is still very, very sharp. The EF 28-135IS also will never be able to produce the wonderful blown out backgrounds of the EF 28-70 2.8L lens with the amazingly crisp and punchy images of the subject in focus when shooting portraits etc. The EF 28-70 2.8L grows as the focal length gets shorter, the focusing is internal so the front does not rotate and yes it takes 77mm filters. I don't think I'll be selling mine any time soon but I have seen some at good prices at the camera shows in Buena Park. Regards, Chip Louie > > Hi Greg, > > I've got two lenses currently, these being > EF 20-35mm f/3.5-4.5 USM and EF 70-200 f/2.8L USM > > Which means I have a gap in my range which I'm now wanting to fill. > I've thought long and hard about the 28-70mm f/2.8L but the only thing > stopping me from going ahead with the purchase is that both my existing > lenses do not telescope externally when zooming - all that happens inside > the lens, so I feel that the dust proofing is good. > > I'd buy the 28-70mm L lens except that it telescopes externally, > so I really > find that hard to accept, since this would mean more likelyhood of dust > ingress. Can anyone allay my fears here? > > My question to you is - does the L lens leave the 28-135mm IS > lens for dead > and secondly, does it telescope internally or externally? When zooming, > does the front element rotate? Finally, does it use a 77mm > filter size, and > are you putting up yours for sale? :) > > Lawrance > > ----Original Message Follows---- > Date: Thu, 22 Nov 2001 17:47:29 +1100 > From: "Greg Au" <[EMAIL PROTECTED]> > Subject: Re: EOS 28-70mm f/2.8 L USM > > I used to use a 28-135 IS, but recently got the 28-70L. > > The 28-70L is a superb lens. Excellent resolution, sharpness, > contrast and > colour. Background blur is very nice too. > > I think it is definitely worth the extra money over Canon's non-L range. > > * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
