SHORT STORY What are the general thoughts on the comparison of: Sigma 18-50 f/2.8 Tamron 17-50 f/2.8 Canon 17-55 f/2.8 IS And between that and a body upgrade (350d --> 30d / 40d), what would you prefer? (complete current kit below, for comparison) Thanks! LONG STORY Hi! I'd love some thoughts on the following situation. A 9 week trip to Aspen, Colorado, sparked the thought that it might be nice to upgrade my kit I've started digital slr last year, and I now own the following (mostly second ha...

First of all, hello to everybody. I'm a registered user to this forum from quite while ago, but always as a "reader". So it's time to change that, and I really want your opinion. I own a 400d since one and a half year ago. I always loved the camera, and it was always reliable and able to fulfill my needs. When I bought it, I was also looking for the 40d, but the price tag was very above. I bought mine 400d (kit with 18-55 + extra battery + lowepro back bag) for about 550€. The 40d (body only) wa...