8 out of 10 points and recommendedSmall, light, inexpensive, fast silent ring USM, good build qualitycontrast a little weak wide open, hood is huge and probably useless
This is a very useful lens wide angle lens for a full frame camera if you're on a budget or need to pack light. If you're looking for ultimate image quality, click elsewhere. If you want a cheap 20mm lens that is reasonably well built and gives good image quality at f/5.6 or f/8, this may be what you're looking for.reviewed May 21st, 2012 (purchased for $175)
On a APS-C camera, there are plenty of better options than this. This lens is all about getting you into UWA territory on a full frame camera without breaking the bank.
9 out of 10 points and recommendedSmall, great build, very sharp away from extreme cornersslightly soft wide open - clears up by f/2.2, hood not included
Honestly, I think this lens has an undeservedly bad reputation among "technical" reviewers on the internet. I'm sure it sucks at shooting test charts wide open. I don't shoot test charts - I shoot people indoors (groups, activity-based portraits, etc) with this lens on an original 5D with wide apertures. The image quality is great as far as I am concerned. Test chart reviewers knock this lens for soft corners at wide apertures - I couldn't' care any less about that in my style of photography.reviewed May 21st, 2012 (purchased for $360)
Build is great - very solid and fast AF via ring USM.
My only real complaint is the noticeable softness at f/1.8. It's useable there, but it's so much better just 2/3-stop away at f/2.2 that I shoot there most of the time.
10 out of 10 points and recommendedGreat IQ, great AF, great build, great valueThat Canon hasn't managed to replicate this lens at 50mm
This is really a great lens. I remain blissfully unaware of what life is like for 85L shooters, but I have a hard time imagining how much better it really can be. I guess an extra stop is important, but for 4x the cost I don't think I'll ever try it - the 85/1.8 is too good in so many categories.reviewed May 21st, 2012 (purchased for $360)
I really wish Canon could construct a lens of this quality at 50mm.