aridan wrote in post #4489730
Thanks Tony
I guess I was referring to the overall IQ as compared between the two. Given the fact that I have a 40D (arriving tonight

), I will certainly be taking the crop factor into account when purchasing my WA lens. Right now I'm starting with a 50mm f1.4 prime (mainly for indoor portraits). My next lens will have to be a walk around lens with a wide enough angle and fast enough aperture for outdoor night shots - most likely the 17-55. Given the fact that a 17-55 cannot be considered an "UWA" on a crop body, I'm also interested in purchasing an UWA - possibly the 10-22. I guess I was just curious to know about the difference in IQ between the latter one and the 16-35, especially since the 16-35 is a faster lens and bears the letter "L"

I have a 10-22 that I use with my 30D and a 16-35 that I use with my 5D. I haven't done a series of tests and comparisons between the two, though. I can say that I'm happy with the results from both of these lenses.
For the APS-C cameras, my most recommended set of lenses would be:
Definitely the 17-55 2.8 IS -- this is a superb lens, the best of its type, and is worth scraping for or borrowing for. It's ideal as a walk-around lens as well as indoors closer-up photography. The only "lack" is that it is not as long as you might need, but it is sharp, fast, and has IS, and great IQ.
You would eventually want a telephoto lens. The low cost 70-300 IS is fine for general use. The 70-200 series is for if you want to "get serious".
Ultra wide, I'd go for the 10-22 in a hearbeat. It really does a good job.
Then, I'd go for a good prime, depending on your needs. The 85 series is great, more reach than the 17-55, but if you need to do more close up work one of the 50 series would be great. Primes are generally very sharp and faster than zooms. Macro lenses are considerations as well if you want to do that kind of work.
And, some things that are really necessary accessories: a solid tripod, a cable release, and a hotshoe flash!
Well, if you can get started with that list, you'll be quite pleased, and then keep coming here and we can help you spend even more of your money!!