.

[DinoS]

./...

[puddleduck]

Its probably Ok... a quick test would be to focus on a chimney 200 yards away, wide open at f/2.8.

If its hazy then don't buy it!

[J4MIE_P]

As above really.
If it's on eBay ***, you obviously can't do this. But I wouldn't really buy an expensive lens off eBay just incase :)

[Slipper-one]

Jessops have a few listed at £273 in their clear-out sale
http://www.jessops.com/clearance?cm_re=230209-_-Home-_-Nav_clearance