ZEISS Batis 2/40 CF Firmware Update

Advantages & Improvements
  • Optimization of the aperture characteristics 
  • Improvement in focal precision when using the eye-AF function on the camer
Instructions & Download

This document describes the update procedure for Batis 2/40 CF firmware. This firmware update is loaded onto the lens via a Sony camera. Camera models that can be used are listed below.

Important information
  • 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.
Hardware requirements
  • Camera: all E-Mount models except for NEX-5, NEX-3, NEX-C3, NEX-VG10, PXW-FS7 and PXW-FS7M
  • Computer
    • Installed OS:
      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.

Checking the firmware version

On the camera, select Menu → Setup → Version. The version of the lens firmware is shown in the left figure.

- Lens firmware [Ver.01]: Should be updated.
- Lens firmware [Ver.02]: No update is required

Updating the firmware:

1.) Carefully read through the license agreement.

2.) Download the .zip file containing the latest firmware

3.) Unpack all of the files contained in the .zip file into a folder.

4.) Log into the computer as a user with administrator rights.

5.) Close all programs running on the computer.

6.) Double-click the downloaded file [FirmwareUpdaterEgLens.exe] (Windows) or [Mac_LensSystemSoftwareUpdater] (Mac) to start the update program for the lens firmware.

7.) Follow the instructions displayed on the installation window of your computer.

8.) The update process is finished when the message ‘Lens update complete’ is displayed on the camera.

9.) Remove the USB cable.

Checking Version 02 of the lens firmware

On the camera, select Menu → Setup → Version. The version of the lens firmware is shown in the left figure.