DPReview Explains Metabones New Firmware



“We’ve tried out the new firmware on a Smart Adapter IV paired with a few lenses (Canon 35mm F1.4L II, 70-200 F2.8L II IS, Sigma 24mm, 35mm, and 50mm F1.4 Art) on the Sony a7R II. Phase-detect functionality appears to be limited to a very small central regions, which means lots of hunting if using off-center points, or Lock-on AF and Eye AF (both in AF-C) for non-central subjects. While AF in video is possible, it’s slow with significant hunting. At this point, with these lenses, we find this update largely useless, and found ourselves reverting to the ‘Green’ mode that was default prior to this update for best performance.”

Via DPReview

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