Can't decide between 70-200 f4 (non IS) and Sigma 50-150mm 2.8
I'm gonna be shooting portraits and static objects, but mardi gras is nearly here in Sydney so I'm looking forward to bringing my camera (20D) to that event.
I've read reviews again and again and again about the two, but I just want to know what everybody else would choose given my situation. Basically my budget is limited so it's those two.
Sigma's 50-150 is faster, has HSM, great design, and IQ seems to be good, but has build issues: internet hype maybe? If I do get a lemon somehow I don't know how I would go about sending it in for calibration. I just don't want to be bothered. Truth be told I had to return a 17-70 once. Actually this is the only thing that's making me go for the slower 70-200. Please knock some sense into me.
Canon's 70-200 is perfect but just F4. Would I be happier with this in the long run or would I be looking for 2.8? Would it even matter? I'm not a pro anyway.
Aghh if only I could get my hands on a used 200mm 2.8! I was just outbid on Ebay 
Fire away! 


, let me tell you, that's one hell of a piece of glass. Zoom might be more versatile for a festival though.
