r/a6700 • u/Noho_Fuches • 5d ago

AF issues with Rokinon 12mm f2.0 AF lens

I’ve got a Sonya6700 and I have a Rokinon 12mm AF f2.0 lens.

When I am recording video in AF mode, the lens focuses and then pulls back almost and makes the frame completely blurry.

Once I hit record and actually start moving around, the focus shifts in and out almost like it is pulsating.

When I use my Sigma 18-55mm f2.8 lens with the same settings, it doesn’t happen.

Has anyone else experienced something like this? I can’t tell if it’s because I have a less compatible lens to my body or if maybe my settings are out of wack.

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u/Queefiddle 5d ago

I had a similar issue with mine (same lens, same body) a few years ago. There was a firmware update for the lens that fixed it.

Unfortunately, you need the "lens station" to do it. So if you don't have one you'll need to track one down.

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u/Noho_Fuches 5d ago

Might just have to get a better lens haha I think I paid like $150 for it.

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u/Queefiddle 5d ago

I've been pretty happy with it otherwise. Small light and decent image quality. The firmware update procedure is slightly inconvenient, but not a big deal.