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IBIS not working with new Samyang AF 12mm?

Started Jan 14, 2022 | Discussions thread
JanisGeo New Member • Posts: 1
Re: A hypothesis on IBIS w/ third party lenses
2

Hello everyone,

I just registered here because I also encountered this issue.

I also bought the new Samyang 12mm 2.0 AF and I also borrowed MF version for comparison needs and I though AF version was superior until I found this thread. I just tested both lenses on X-S10 with a shutter speed of 1/2s. I tried to take shoots with the same physical settings. Here are the sample shots, cropped 100% from the central part of images:

Shutter speed 1/2s, handhled

Left - AF version, middle - AF version rotated to disconnect pins, right - MF version

I can confirm that apparently IBIS is not properly working on AF version, while it works really nice on MF version. Also, AF version rotated to disconnect pins also works much better than connected AF lens.

Janis

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