Hi All,

In Late August going to Darwin and shooting my cousins wedding
Looking forward to the warm weather and the experience of it all, including the shoots on the day

Can anybody please recommend any Great Lenses for either the Canon 50D & 350D for shooting a Wedding with and in low light like inside a Church, indoors, etc.
that is a Great portrait and people lens to capture the event sharply and
Also that compliments my existing Gear (as in sig).

Was looking at Canon 16-35L F2.8, but too expensive. and any good on 50D?
then the Canon 17-40L F4 lens (but is it good in low-light and portrait/People shots?).
again any good for 50d or 350D?

then l saw the Tamron SP AF 17-50mm f2.8 XR Di-II VC LD Aspherical (IF) Lenses for $474 > HERE and looks Great! can anybody recommend this Lens and is it Great Sharp lens for Weddings, church, indoor and portrait/people lens?
Is it good at 17mm as 50mm?
Any photos or help on this lens or other recommendations would be appreciated?

Thanks Alot


Robert