Off the two lens you mentioned,
Both lens suit general purpose use.
In my opinion, 17-85mm would be better than 28-135mm.

EF-S lens can only use in 40D / 30D / 400D / 350D.
But cannot use in 5D / 1D series.
EF lens in the other hand can be use in all ranges.

17-85mm was a much newly release lens compare than the old 28-135mm.
Also Canon said its photo quality far better than 28-135mm.

What is your main purpose using these lens ?
Landscape ? Portrait ? Snapshots ? Fashion ??
Depends mainly the usage.
Otherwise, what you have now is more than enough.

Hope it helps.

引用:

原帖由 oxyclean 於 2007-12-22 05:05 發表



Thanks Maverick.

Yea, I recognized that the EF-S series of lenses are newer, but I kind of doubt its quality over the original EF. (Maybe there is a reason for Canon to make a new mount fo ...

Brother usnameless point out a few worth consider:

1/ Canon lens tend a bit expensive, "L" even more expensive.  You may consider 3rd party lens like Tamron or Sigma if you have limited budget.

2/ If you use inside the church, you need to consider f/2 or f/2.8 as you might not allow use flash inside.  70-200 f/2.8 IS L might be the ideal choice but not chaep.