Ooo nice topic. Just the kind of info I've been looking for as I'm buying my starter set of lenses for my new 20d :) I've ordered: 1) Canon 17-85mm EF-S IS - this will be my general purpose lens I suppose. 2) Canon 50mm f1.8 prime - something to use in low light, or when I'm forcing myself to think more about the composition rather than simply "zoom to fit". 3) Canon 70-200mm f4L - people can't seem to recommend this lens enough. I know I'll end up wishing I splashed out on the f2.8 IS model - baby steps Wiv old boy. 4) Canon 18-55 Kit lens - probaly keep this in a box somewhere and when the time comes to upgrade the camera body, I'll sell it on as a "kit". Hopefully that will give me a good set to be going on with :) Those shots with the 180mm Sigma Macro makes me want a true macro lens though. Maybe the Tamron 180mm 1:1 lens...when I've recovered from this set though! Oh, and perhaps the new Canon 10-22 EF-S wide angle could come in handy :) Darn it...this SLR lark is costing me a packet! ;) Size matters? It's what you do with it that counts...or so I'm told...never beleived it though ;)