Hey guys, it's been quite a while since I've frequented these boards, so I don't really feel up to date on what's been going on in the technology realm of Canon's digital market. In fact, I didn't even know they released a 40D until about an hour ago! So, this being so, I need some advice. For about a year now I've been using a Rebel XT (you can see the lenses I use in my sig) and now I think it's time to upgrade. I'm starting to get more and more photo jobs (I work for Penn State almost consistently now!) and am also about to start a small portraiture business. And because of this, I feel I need another camera. Not only will it be nice to have a back-up (which the XT will be) but I need a camera with more FPS (I shoot movement-oriented subjects a lot, Penn State sport camps in the summer, concerts, etc.) and MUCH better ISO performance than the grainy and ****ty 1600 of the XT. Now, I've always wanted the 5D because of its superior ISO performance, but the full frame sensor always scared me a little bit--two of my favorite lenses (including my favorite, the 17-55 IS) are EF-S, which would render them obsolete. So If I did go for the 5D, I'd need to plunk down another grand for the 24-70L. So money wise, and lens wise, I'm thinking the 40D would be a better choice. BUT, ISO performance is one of my biggest concerns, as I shoot in low light conditions more often than not. Is the 5D's ISO performance really all that better than the 40D's? So my question is: 40D? 5D? Or wait for the 5D's successor? And if so, when is the "6D" supposed to arrive? Thanks guys, I really appreciate your help.



