At least you have a back-up body with the Rebel XT if you would need it.


You're really going to need a good lens and a flash to do a wedding properly. If you're serious about doing weddings, I'd say go for a high quality zoom anda flash. The problem with fast primes is that often you're taking pictures of groups, and the DoF is so thin at large apertures that you'll have to stop down anyway.You'll need a flash to get the lightning you need (plus a diffuser or mini flash softbox so the lighting is more dispersed).The versatility of the zoom will be more helpful, you won't want to be changing lenses all the time, and will make taking candids easier.


Since you are shooting with crop cameras, I'd actually recommend the EF-S 17-55mm f/2.8 IS USM. It's cheaper than the EF 24-70mm and is wider on your 50D which you'll need for group shots. The price difference would get you a 430EX II, or most of the way to a 580EX II. The 580EX II can be used as a wireless master for other flashes if you get more in the future for better lighting.


- Aaron