Which camera models have a focus issue with the Sigma 30mm f1.4?

Started 4 months ago | Discussions thread
Kogel
Kogel Regular Member • Posts: 169
Re: Which camera models have a focus issue with the Sigma 30mm f1.4?

mcslsk wrote:

I am not questioning field curvature of the lens. What I am saying is that the AF issue the Sigma lenses dispaly on Sony cameras is not realted to field curvature. It has something to do with the AF motor and the software driving it.

Maybe also related to significant focus breathing of this lens series. In AF-S mode some Sony cameras change aperture to focus and then reset aperture.

Never found the real cause, bought a full-frame camera and sold my Sigma trio.

 Kogel's gear list:Kogel's gear list
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