Upload & Sell: Off
short of the big guns, my sharpest lenses that i've used are the 35L and the 85L though the 85mm f1.8 was no slouch in terms of sharpness. I think a lot of it comes down to certain copies being good and certain copies being not as good. for example, i owned two 24mm f1.4L's but the first one was pretty much no good... however the second one i owned could hold it's own against the 35L (and my 35L, in my opinion, is very sharp.) but really, to buy a lens based on how sharp it is, not what FL it is is sort of dumb. I mean, if you need the sharpest lens, but you won't use that FL then don't buy it. For example, most people say that the 200mm f1.8L is the sharpest lens in the Canon line up, but I can't imagine ever using a lens like that. I hardly do anything past 85mm... so in other words, i'd be wasting $4000 if I bought something like the 200mm f1.8. So the best thing to really do is just find out what sort of lens you need (35L for wide angle, 50L for standard, 85L for portaits, 135L for indoor and events, 200L 300L 400L for teles.) and outside of these options, there are of course the ziess, leica, and oly options. if you think you opened a can of worms by asking what L lens is the sharpest, just wait until you asked what lens (regardless of the maker) is the sharpest.