Digital photography

Buying used lenses from ebay etc. - too risky? what do we think? I'm after a canon 70-200 f4 L and they seem to be pretty good value new anyway but i have limited experience in buying lenses second hand. Cheers
Seeing as you're in Sheffield, keep an eye on the used stuff at Harrison's on London Road (if you're not already). Probably a bit pricier, but they do a 1 year warranty on all their used gear.

ps: Come play polo.