Imaging recource: Compatibility issue: Sigma announces that MC-11 mount converter may not focus properly on Sony A9

With new cameras and technology, there’s always a risk of compatibility issues with third-party lenses and equipment. Unfortunately Sigma has announced that they have discovered an issue with their Sigma Mount Converter MC-11 and the new Sony A9. When using the Sigma Mount Converter MC-11, either the EF-E to SA-E versions, some of Sigma’s interchangeable zoom lenses may not offer accurate autofocus performance. When using an adapted Sigma zoom lens with the Sony A9 in AF-S mode and focusing on a subject in the telephoto range,...
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