Hey Frank, welcome to the forum![Y]


Quote Originally Posted by Frank Zhao
So do you think that the 18-200's poorer optical quality is going to be apparent on a 8MP sensor? Maybe, since the resolution of the DRebel XT is so low, I can get away with it? The reach of this lens is really quite impressive. Also, do you think the upgrade over the kit lens is going to be worth the money?

Yeah I think you'll still see the poorer optical quality on your sensor. And to be honest, I guess one day you'll want to upgrade your body and you'll have to sell and buy another lens. My advice: if you buy, buy the best you can get, even if you don't need it right away. You'll be disappointed later on if you don't.


An upgrade over the kit-lens is certainly worth it. You are looking at a hard choice though. Personally I would buy the 17-55 f2.8 IS, but I don't know if it is in your budget. Between the 2 I'd vote for the 15-85, but to be honest I wouldn't want any of them.


Also let me try to give you a hint in another direction: what about the Tamron 17-50 f2.8? Very good optical quality and for a lot less money than the 17-55 or the 15-85. This way you could with the remaining money save up and try to buy a 70-200 f4 as a telelens. This way you'll have both ends covered in great image-quality. I think this option is best value you can get for your money.


Jan