BTW - see above about the tokina lens that i've got. Nice fast lens - seems to give me pretty good image quality too. I'm in boston for april - if you want to play around with it I can bring it to a silks night with me : )

(I didn't think i'd be happy with a 3rd party lens - but supposedly the higher end lenses from the 3rd parties (sigma, tokina, tamron) actually don't suck - and this lens was cheap enough to grab and play with and resell if i didn't like it - cost me what it would take to rent the equivalent L lens for 2 weeks : )