Metabones released the new firmware update V0.57 for their Metabones Smart Adapter IV and EF-E Speed Booster ULTRA 0.71x. You can download the firmware for WIN and MAC.
- Benefits and improvements:
- Added autofocus support during high speed and medium speed continuous drive (up to 10fps) on Sony A9 (“Green” mode only). Experiment with the “Priority Set in AF-C” setting for the best compromise between hit rate and frame rate for your shooting style. Overall performance depends on lens used. The camera does not use hunting while tracking is in operation. If subject movement exceeds the measurement range of the OSPDAF sensor, autofocus pauses. This is by design. The measurement range of the OSPDAF sensor decreases as the focal length increases. Except for the original Mark I Smart Adapter this feature is available for all subsequent Speed Boosters and Smart Adapters.
- Enlarged PDAF area on supported cameras when adapter is in Advanced mode, with the advisory that AF performance may be unsatisfactory outside of the central portion of the frame.
- Enabled AF illuminator (Advanced mode only).
- There is an AF accuracy issue when using AF-S or DMF on Sony A9 and telephoto lenses with Metabones in “Advanced” mode, which affects this and all previous firmware versions. Green mode, which is set by default on Sony A9, is not affected (except for the original Smart Adapter Mark I, which does not support “Green” mode). A9 users are advised to not use “Advanced” mode but stick with the default “Green” mode. In addition, some telephoto lenses rarely exhibit this issue, such as EF 200/2.8L II USM, EF 400/5.6L USM and Tamron 150-600/5-6.3 VC USD A011. Investigation of this issue is still in progress.
- Fixed AF issue with EF-S 10-18mm f/4.5-5.6 IS STM and EF-S 18-135/3.5-5.6 IS Nano USM lenses.
- Fixed smooth iris support for 40/2.8 STM, 50/1.8 STM and Sigma 50-100/1.8 DC HSM Art 016.
- Fixed CN-E 18-80 T4.4 L IS KAS S servo zoom used by the camera’s zoom rocker and the lens’ rocker in alternation.
- Fixed CN-E 18-80 T4.4 L IS KAS S auto iris when adapter is in Green mode, where extremely bright conditions no longer causes the iris to close completely.
- Fixed aperture display with Canon EF 300mm f/4L IS USM lens and Kenko Pro 300 teleconvertter.
- Corrected W-T zoom scale display in “Advanced” mode for Speed Booster and Kenko Pro 300 teleconverter (except Mark I/II/III and original Speed Booster).
- Faster aperture diaphragm for still photography in Advanced mode when Live Vide mode is set to Setting Effect OFF.
- LED (if available) now shows solid magenta when adapter is connected to USB waiting for Metabones App to run.
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found via Brian Smith