Manual lens adapter ring III generation PK-FX

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Manual lens adapter ring III generation PK-FX


Manual lens adapter ring III generation PK-FX

About this item

  • 【 Function】You can mount Pentax PK mount lens to Fujifilm X-series X FX mount mirrorless cameras,you can adjust the aperture manually on this adapter for your PK lens.
  • 【 Material】All-metal design; hardened anodized aluminum construction,matting varnish inside to avoid light reflection.
  • 【 Features】Supports manual control, manual focus, manual exposure and focus to infinity.
  • 【 Cameras Compatibility】Designed for Fujifilm Fuji X-Series Mirrorless Camera Body: X-Pro1, X-Pro2, X-T1, X-T2, X-T10, X-T20, X-E1, X-E2, X-E2S, X-A1, X-A2, X-A3, X-A10, X-M1 etc.
  • 【 Verify Your Lens and Camera Mount】You can find your lens/camera mount in the len's/ camera's original user manual. Or find your lens/camera on the manufacturers' website and under the product specifications look for “mount type".
For product extended warranty services please click HERE

Instructions for use


  • Manual adapter without autofocus or aperture ring.
  • Skillful installation, needn't too much force.

'No Lens Attached' - Warning Message Appears:

  • If your camera indicates "lens is not properly installed", please modify the camera settings: 'Menu' -> 'Setup' -> 'Release w/o Lens' -> 'Enable' (Exact naming and location may change depending on camera model). If your lens does not have a manual aperture control ring, it will stop down to its smallest f/stop by default.
  • Set camera "release shutter without lens" to enable when using the adapter for the first time, or the camera will fail to recognize the lens and the shutter may not be released.





  • Lens: PK Mount Lens
  • Camera: FX mount Cameras
  • Compact and high quality with metal material
  • Precise production to ensure the perfect fit
  • Diaphragm control of the lens is set manually
  • Allows focus infinity
  • Elegant clear appearance

Infinity focus position:

  • The position of the infinity mark [∞] of the telephoto lens is shifted slightly to the positive side to enable focus adjustment even when focus shift is caused due to temperature changes. The shift range is denoted by an L-shaped line, Be sure to check the focus through the viewfinder even when you shoot at infinity.


  • Adapting APS-frame lens to full-frame camera, it may generate vignetting, some cameras could correct it by adjust APSC.
  • Adapting full-frame lens to APS-frame camera provides excellent edge-to-edge sharpness. The smaller image field helps minimize the effects of lens distortion and aberration by using the 'sweet spot' or center of the larger lens image circle. And it will magnify the focal length by 1.6 on Canon, 1.5 on Nikon and Sony, 2.0 on M4/3 camera.



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