I'm looking to replace my 18-55 kit lens on my Rebel, which I've had since last year. I'm doing rather more low light/indoor photography than I anticipated and would like something faster that will also provide sharper images too. Ideally it would be the Canon 17-55 IS, but realistically, having just done my budget for this year, I'm not going to be able to afford it for a very long time, especially having just bought a longer reach zoom. I've been reading good things about the Tamron 17-50, which is significantly less expensive than the Canon, but it doesn't have IS. I love the IS on my longer zoom.
The new lens would be the everyday walkabout lens, so I'd much prefer a zoom over a prime, and it would also be used indoors, hence the need for a 2.8. Is the Tamron a good choice and, for those of you who have it, does the lack of IS make a big difference? I've checked out the archive on this lens and the photos are terrific. In the past I've lost a few good shots because of camera shake, but maybe the faster glass compensates for lack of IS in some indoor situations - does it? If the Tamron isn't a good choice, can you suggest anything else? Main subjects are my kid, my dogs, travel photos, dog sports, that kind of thing. I'd have liked a little more reach than 50 mm, but can manage with that range now that I have my other lens. Target price under $500, and the further under, the better. Thanks!
its wonderful lens in my opinion. If you dont mind loud AF and that focus ring turns while AF works its best you can get for the money. I think the lack of IS isnt that huge problem, indoor you can hold camera against a wall or some other object that doesnt move, 


