Sigma 120-400 OS users

Started Oct 12, 2012 | Discussions thread
Regular MemberPosts: 423Gear list
Re: Sigma 120-400 OS users
In reply to monographix, Oct 24, 2012

Forgot to mention i am ok with the 120-400 AF speed. I think its decently fast for the use i purchased this lens for.

There's a chance also i will manage to have some test shots with Kenko Pro 300 DGX 1.4x TC. Will post when i have them. From some short fiting test i did , artificial room light conditions, there was some AF hunting but at the end the lens focused. There was some increased softness  but the result was better than resampling the 400mm image to 500mm size in Photoshop (which we know has pretty good resampling algorithms, with the bicubic tech and all). Waiting for a chance to see how it behaves on daylight.

One test with the kenko TC 1.4 : (back-focus increased too)

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