Excerpt: I loved this lens, problem was it had me questioning if I was going to get the shot in focus or not. I had some awesome pictures from this lens, and then some that would have be awesome if they would have been in focus. I use back button focusing and everytime made sure the focus was where I wanted it, but sometimes it wouldn't be focusing on where I intended which ruined the shot completely. I couldn't afford to lose those shots.
Summary: I am guessing I have gotten a bad copy, since no one mentions this issue. The lens focuses just fine at the minimum distance, but as I step back couple of yards it starts to front focus. At first I thought it was a user error, just so strange the all the closeups were so perfect, but every time I tried to do a full body portrait the eyes were just slightly out of focus 2-3 yards away.
Excerpt: This is a good lens, don't get me wrong. However, for the price I think you could do much better. The 50mm is by far the better lens. The 35mm had trouble focusing in low light, and was surprisingly slow. I found myself having to switch to manual focus quite a few times to get the right focus. I was surprised at this from a [$] lens. I have used it for about a year, and I ended up selling it in the end.
Pros: Durable, Easily Interchangeable, Rugged, Strong Construction
Excerpt: While not sharp wide open, still an amazing lens optically. Unfortunately the build quality is worse than the newest EF-S lenses. My particular copy also had a focus ring that was very sloppy, causing quite a bit of slack each time you reversed focus direction. It's not weather sealed, but I knew this ahead of time. Still, for $1300+, I expected a well damped, smooth focus ring.
Pros: Consistent Output, Fast / accurate auto-focus, Nice Bokeh
Excerpt: This is a very good wide angle prime lens from Canon. The focal length is commonly one that can be a walk around lens. It is well balanced and easy to hold during shooting. The lens is not overwhelmingly sharp at the wide apertures but good bokeh. The corners are not so great at these apertures. THe sharpness improves at f2.8 and by f4 very sharp and decent corners on a full frame sensor. The lens does suffer from a bit more CA than i had hoped.
Excerpt: This is a great length for indoor people photography on crop cameras. Should be perfect for low light shots without flash. My copy has been to Canon twice and it is still blurry below 2.0. Those who get a good copy really like this lens, as would I if mine worked.
Excerpt: not as sharp as the cheaper 50mm 1.4L at wide open aperture. <br /><br />the lens performs well at f/2.0, but not worth the extra 800 bucks.<br /><br />their built quality are also inconsistent. had to return the first one, the quality was even worse.