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TECHART TZG-01 autofocus lens adapter - Contax G mount lens to Nikon Z mount camera

The TECHART (Techart) TZG-01 is an electronic autofocus mount adapter that allows Contax G-mount lenses to be used with Nikon Z-series cameras. Featuring a built-in AF motor, it offers a compact design that ensures a well-balanced setup with your lenses.

Features

  • Compatible with AF-S, AF-C, and MF focus modes
  • Manual focus operation via the side dial on the adapter
  • Supports AF-C mode in video recording
  • Compatible with "Face Detection" and "Eye AF" features
  • Works with in-body image stabilization
  • Interior flocking to minimize internal reflections
  • Firmware updateable for enhanced functionality
  • Constructed with aircraft-grade aluminum and copper alloy for durability and lightweight performance
  • Equipped with a 32-bit ARM processor to improve autofocus performance
  • Utilizes a brushless motor for enhanced durability
  • Records focal length (up to 10 types) in EXIF data (requires focal length setting)

[ Compatible Lenses and Lens Data Switching ]

To ensure proper operation of in-body image stabilization, the aperture value of the camera body must be set according to the focal length of the attached lens.
For example, when using a 35mm lens, set the camera's aperture value to F1.8.

Lens ModelSet F-Value
Carl Zeiss Hologon T* 16mm f/8.0 ※F2.5
Carl Zeiss Biogon T* 21mm f/2.8F2.2
Carl Zeiss Biogon T* 28mm f/2.8F2.0
Carl Zeiss Planar T* 35mm f/2.0F1.8
Carl Zeiss Planar T* 45mm f/2.0F1.6
Carl Zeiss Sonnar T* 90mm f/2.8F1.0
Carl Zeiss Vario-Sonnar T* 35-70mm f/3.5-5.6Adjust per zoom range:
F1.8 (35mm)
F1.6 (45mm)
F1.4 (50mm)
F1.2 (60mm)
F1.1 (70mm)

※ Note: Autofocus is not supported; manual focus is required.


Specifications

  • Model Number: TZG-01
  • Compatible Lens Mount: Contax G
  • Compatible Cameras: Nikon Z9, Z8, Z7II, Z7, Z6III, Z6II, Z6, Z5, Zf, Z fc, Z50, and other Nikon Z-mount cameras
  • Please note that functionality issues may occur with new camera models or firmware updates. Please wait for firmware updates to improve compatibility.
  • Latest Firmware Information: For improved features and functionality, please refer to the STKB Support Page.

Notes for Use

  • Recommended Modes: Use Aperture Priority (A) or Manual (M) mode for shooting.
  • Autofocus performance may vary, and the focus may occasionally be soft. In such cases:
    • Set the AF area mode to Single Point AF.
    • Use the central focus point, or focus manually.
  • Autofocus performance is best with the lens aperture fully open. If focusing is difficult at smaller apertures, try focusing with the lens aperture fully open, then adjust to the desired aperture.
  • Unsupported Modes: Not compatible with "Pinpoint AF" mode.
  • Autofocus speed and accuracy depend on the camera's AF capabilities.
  • Compatibility with all lenses and camera functions is not guaranteed.

Precautions

  • Autofocus speed is slower compared to genuine Z-mount lenses. Some lenses may not function properly depending on their condition.
  • In case of a freeze during use, turn off the power, detach the adapter and lens, wait briefly, then reattach them and power on the camera.
  • Attach or detach the adapter with the camera power turned off.
  • Keep the electronic contacts clean to avoid malfunction.
  • Do not expose the adapter to water or extreme heat to prevent damage.


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For buyers in the United States:
Import duties and taxes are included in the item price or shipping cost.
Items shipped to the U.S. are sent under the Delivered Duty Paid (DDP) method, which means all import-related charges are prepaid.
You don’t need to pay any additional fees when your order arrives.

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Import duties, taxes, and charges are not included in the item price or shipping cost.
These charges are the buyer’s responsibility.
Please check with your country’s customs office to determine what these additional costs will be before bidding or buying.

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