-----Original Message----- From: Lawrance Lee <[EMAIL PROTECTED]> > >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?
For what it's worth Lawrance, I've had the 28-70 L for about two years, use it a heck of a lot, and don't have a single dust-bunny in it. In fact, currently with six zooms, the only problem with dust particles I've had is the 28-135 IS which is a great lens but rather loosely constructed, and from what I gathered on this List and other sources, rather prone to dust accumulation. The other part is I think eventually any lens is going to get a few dust particles in it, kind of a fact or life. Zooms probably more so than fixed focal length lenses. And granted the lenses that don't change physical length and do the zooming internally, may be more resistent to dust but it can happen with them too. If you are limiting your choices to just these kind of lenses however, your lens selection will be fairly narrow. If accumulated dust particles are a serious concern, a Canon Service Center can remove them although usually, they don't effect image quality. I mean, we can put our lenses up against a wire cage for instance and shoot through it and you won't see the wire in the image. I've done that frequently at zoos. Don't sweat a dust particle or two. > >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? :) The 28-135 IS is a great lens but I consider it's best used for different shooting scenarios than the 28-70 L and, indeed the latter is a sharper, professionally oriented lens. The 28-70 L does have a 77mm filter thread and the front element of course does not rotate. Also, if it's any consolation, when the lens hood is on, you can't "see" the 28-70 L getting longer or shorter ;-) Buy one if possible, it's one of the best zooms made. Gary Russell * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
