[Yakim]

I have a feeling that you only read the OP and not the entire thread. Here's a summary + other info.



1. I'm not switching brands and never intended to. I wanted another system in order to enjoy both worlds.



2. Since the OP was posted I've decided to sell the Sony due to problematic ergonomics. I also never bought a Rebel because of the exact same reason.



3. Indeed, the Tamron 17-50/2.8 was a candidate as it offers AF and a very useful range. BTW, after getting the Tamron 60/2 for the A33 I'm happy I didn't as I'm experiencing a lot of AF hunting. In comparison, my 60/2.8 (also without AF limiter switch) is significantly quicker. I was then thinking about Sigma's HSM lenses but canceled it because of the selling decision.



4. I have the 7D, 17-55/2.8 IS and a host of other lenses. BTW, I also have the 18-55 IS (and 55-250 IS) when I want to travel light. Obviously, these were purchased before the Sony. Strangely, the 18-55 IS is also a lot quicker to focus than the 18-55 SAM. This leads me to suspect that inherently, Canon's AF system is a lot better than Sony's.