Summary: Used on 5d mk3, Very sharp above f8. Has significant vignetting, just over expose a bit, and use the lens correction in post and it's not noticeable. At 12mm, there is pretty bad distortion in the corners that isn't easily corrected in some scenes, but if you're conscious of it you can adjust your...
Excerpt: I've been a professional photographer for about 14 years now and do a lot of wedding/portraiture but have been getting more requests for real estate work and landscape art. A great telephoto, wide lens was definitely necessary and I've been trying few different ones throughout the years.
Excerpt: I bought this lens for landscapes, when used on the A7 with the LA EA4 adapter, it operates like a charm. Because I still have the A700 and plan to use that at times too, the A-mount was the way to go (not that there is an E-mount version of this lens or any Sony lens currently in this range).
Pros: Consistent Output, Fast / accurate auto-focus
Excerpt: I bought this lens for my sony A7 using LAEA-4 since no sony product with this focal length. The focus is fast and picture is sharp once you're > f8. You can't hear the motor when the lens is doing the auto focus. I Love the fast focus of this lens.
Pros: Durable, Fast / accurate auto-focus, Rugged, Strong Construction
Summary: I bought this lens for my Sony A7 using the LAEA-4 adaptor, since no sony product that covers this focal length. The pictures are sharp especially with aperture >F8. The lens is almost the weight of sony 70-200 f4 FE lens. Not weather resistant nor built with OS, but built like a tank.
Summary: This is my first Ultra wide lens and i m loving it.I chose this lens over Canon 16-35 mainly for those four extra mm at the wide end . I'm very satisfied with it . it's a great lens for outdoors use or in good light. Distortions are bad but are correctable.
Summary: I bought this lens to fill out my focal range and I wasn't sure if a super-wide zoom would be that useful to me (so I didn't go for the super expensive Nikkor 14-24 f/2.8). Having never owned anything wider than a 24-70 full frame lens I was a little slow getting the hang of this lens.
Pros: • Love the 12mm wide end on both full frame and crop sensor bodies., • Solid build, • Great on my D7100, • Fast Focus
Cons: • Some flare when shooting into the sun, not unexpected though., • Occasionally -- misscommunicates with my D700 and gives me an aperture reading of F99 (just turn off the camera and back on to clear the error)., • Sometimes I bump the the Auto Focus switch to Manual by accident -- I'm not sure h...