Pentax 645Z Firmware v1.23 Released

Improved tethering support via Image Transmitter

By PF Staff in Firmware Updates on Apr 20, 2017

Ricoh Imaging has just enhanced the tethering functionality of the Pentax 645Z (and K-1) through a firmware update for the camera and a software update for Image Transmitter 2.

The key improvement in these updates is the ability to change many new settings while tethering, including the drive mode, image format, and focus fine tuning. Note that you must already own a copy of Image Transmitter 2 in order to use this update— the software is not free and is available for purchase from Pentax outlets. You can install the latest firmware even if you don't plan on using Image Transmitter, however, as the firmware is cumulative and includes all previous enhancements.

Download the 645Z firmware and Image Transmitter 2 update from the official Pentax firmware site.

See our in-depth review for more information about the Pentax 645Z.

Official Release Notes - Camera Firmware

[Main changes from Version 1.22]

Correspond to Image Transmitter 2 version 2.3.0
[Function enhancement/Additional item when using Image Transmitter 2 version 2.3.0 ]
   -  Drive mode change function.
   -  White balance change function.
   -  Custom image change function.
   -  Image recording format change function.
   -  Card slot setting function.
   -  Live view magnification change function.
   -  Focus fine adjustment function for live view.
   -  Focus assists setting function. (Only for Windows)
   -  Exposure bracket setting function. (Only for Windows)
Improved stability for general performance.
*When this update is done, the contents of version 1.22 and earlier will be also updated.

Official Release Notes - Image Transmitter 2

[Main changes from Version 2.2.1]
[Function enhancement/Additional item]

Corresponded to PENTAX KP.
The following items can be set newly.
   -  Drive mode change function.
   -  White balance change function.
   -  Custom image change function.
   -  Image recording format change function.
   -  RAW format change function.
   -  Live view magnification change function.
   -  Focus fine adjustment function for live view.
   -  Composition fine adjustment function. (Only use with KP)
   -  Start and stop / file transfer for movie shooting. (Need SD card/645Z is incompatible/K-1:LV is incompatible)
   -  Correspond to timer exposure of Bulb. (Camera side timer setting value display/ start and stop by application side timer)
   -  Focus assists setting function.
   -  Correspond to exposure bracket setting. (Only for 645Z)

[Improvement item]

Maintain enlarged condition after AF for live view magnification. (KP is incompatible)
Correspond to display magnification change of independent post view.
*When this update is done, the contents of version 2.2.1and earlier will be also updated.
*It is necessary to update the firmware to version 1.23 for 645Z and version 1.41 for K-1.

Pentax 645Z firmware update instructions:

Download the latest firmware ZIP file
Extract the file to a folder of your choosing
Locate the extracted .BIN file and copy it to the root (top level i.e. outside of any folder) of a formatted SD card
Insert the card into your camera's SD1 slot and ensure the battery fully charged
Turn the camera power on while pressing the MENU button
Select "Yes"at the firmware prompt
Once the screen displays "Complete", turn off your camera
Power your camera back on and resume normal use
In order to verify that the firmware update was successful, go to the firmware option under the setup (wrench icon) menu tab, and confirm that the indicated firmware version matches that of the update.

Note that all Pentax updates are cumulative, so you do not need to install or download previous updates (nor is it possible to do so).

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