Soooo a sharpness comparison. Whoop-dee-doo. Yes, many people will not buy the 50L because it's not sharp enough, whatever their measure is, and that it's kinda quirky in use. Bryan obviously didn't want to fiddle with it, and I respect that, like anyone else who doesn't care for this lens. But sharpness isn't everything, and the 50L has it over the 1.4 & 1.8 in every other aspect. I like mine. Wouldn't part with it. The 1.4 & 1.8 aren't in the same league. Maybe the Sigma Art is close, and sharper, but I still prefer the way my 50L renders.
Amen. I dont shoot test charts all day so I cant comment how the L compares to the rest. Hands in outside in the real world prefer the L by a country mile.