Ok, I posted this on another thread but I haven't got much replies. Maybe that's because I posted it in a long thread and people who haven't read that thread just don't read it now since they are like "well I didn't follow this thread from the beginning so I won't step in at that stage". So I'll try again in a new thread dedicated for this specific question, so there we go:





Hmmm.... Tamron 17-50mm f/2.8 XR Di II or Canon EF-S 17-85mm f/4-5.6 IS USM? (for the 50D)


The Canon is a slow lens but focus speed is pretty much fast and accurate and it has a silent ring USM.


The Tamron is fast - constant f/2.8 but has less reach on the long
end, focus is slower than with the Canon (so I heard at least) and not very much accurate
according to Bryan, and it does not have fast and silent focus motor.


Now, one of the big reasons that made me realize that I need to move
to DSLR was that I wanted to stop indoor action without using a flash.
I'm not talking about stopping indoor sports and the like - just
babies, kids and people who are moving around.


If I go with the Canon, this lens is slow - f/5.6 at the long end
(which I'll probably be using a lot), so that's not good unless the 50D
ISO performance is so good so it can compensate for the slow max.
aperture.


If I go for the Tamron I might just miss the action as a result of
the slow focusing speed. With the Canon I still might get the shot but
it will be blurred, and that I can get with my P&S as well... don't
need a high end DSLR for blurred pictures.


So people... please help, I'm confused [^o)]