Top critical review
6 people found this helpful
Major design flaw leads to defective autofocus
on February 27, 2016
First off I want to say, the reason for the poor review is not because of the quality of the images it produces. On the contrary, this lens is utterly fantastic, especially at f1.4. If you had asked me last year what I thought of this vs the 1.2, I would have said "are you crazy? Why pay $1000 more for a half a stop of light?" It really does seem to be the case, however, there is something they dont tell you about this lens.
It breaks. The auto focus, that is, breaks. Due to a problem with a metal part of the focusing apparatus becoming warped overtime, the lens can lose it's ability to auto-focus, or worse yet (like mine) lose the ability to manual focus as well. I've read about this problem online, and this is definitely not limited to mine. It is a global design flaw with this particular lens. Sure, you can watch some Youtube videos on how to fix it yourself, but after 5 minutes (of what is likely an hour long procedure, if you are careful), I realized I'd feel more comfortable doing brain surgery that taking on something like that.
That being said, it seems like perhaps the 1.2 could be a better option. You get what you pay for, and in my experience with the 85 1.2 and 24-105, the L lenses are second to none in design and quality. Just something to think about.