Zeiss has released a firmware update for the Batis 40mm F2 CF Fullframe E-mount Lens to improve Eye AF and aperture performance.
Advantages & Improvements
Optimization of the aperture characteristics
Improvement in focal precision when using the eye-AF function on the camera
Instructions & Download
Attach the lens to the camera before running the update for the lens firmware.
Ensure that the camera is switched off.
Remove the memory card from the camera before the update.
When updating the lens firmware, please use a fully charged NP-FW50 or NP-FZ100 battery, or the AC-PW20 power unit.
Note: The update can only be carried out if the charge status indicator still shows at least three battery symbols. Remove the portrait handle, if fitted, before updating the lens firmware.
Do not remove the battery during the update process because this may render the camera inoperable.
Prevent your computer from switching to standby mode. If your computer switches to standby mode and interrupts the update process, repeat the entire update process from the very beginning.
Camera: all E-Mount models except for NEX-5, NEX-3, NEX-C3, NEX-VG10, PXW-FS7 and PXW-FS7M
– Windows 10®, Windows 8.1®, Windows 7® or
– Mac OS X v.10.10 – 10.11, macOS 10.12 – 10.14
– Hard disk storage capacity: min. 200 MB
– RAM: 512 MB or more
USB cable supplied with the camera
Note: Close all of the other software applications before updating the lens firmware.