EXCERPT page containing first few paragraphs. 2021-12-02 16:18:15
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Update: Zeiss confirms that the lens I am testing does not have production firmware. Accordingly, take this page as examples of what might happen with lenses in general. Further testing will all use manual focus, to concentrate only on optical performance.
This page shows only crops comparing what the Sony A7R III + Zeiss Batis 40mm f/2 CF delivers with contrast detect autofocus (CDAF) in magnified Live View at 100%, versus manual focus. In every case, I found that the autofocus result was visibly blurred of a magnitude requiring f/5.6 to f/8 to get back what was lost. This page does NOT evaluate autofocus accuracy in non-magnified Live View.
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