Fujinon MK - FZ Mount Kit Installation Guide


This kit converts the Fujinon MK 18-55mm and 50-135mm to a native Sony FZ Mount to be used with cameras such as the Sony F5 and F55. The Fujinon MK lenses do not offer any electronic feedback This mount is considered "passive" in that there is no communication between the lens and camera. The conversion process is entirely NON-destructive and is fully reversible at any time. Installation requires basic mechanical aptitude and only involves four screws. 


You'll need a #0 phillips screw driver. To begin, simply remove the four screws located at the rear of the factory E-Mount.


This will allow you to remove the E-mount, exposing the factory shims which are semi-transparent plastic, not brass or steel. Do not disturb the factory shims.


Position the Duclos FZ mount so that the steel pin facing the camera and is in the 12 O'clock position on the lens.

 Install the four provided M1.7 screws by hand tightening or by using a torque setting of 0.4 Nm if applicable.

Make sure that you keep the original mount and screws in a safe place so that you can revert back to E-Mount in the future. Back focus can be adjusted if needed using the F.f adjustment knob on the lens. For more details on back focus procedure, click here


Duclos Lenses has developed this product with the support and approval of the Original Lens Manufacturer. Therefore, the factory warranty is FULLY maintained. However, as part of our agreement with the Original Lens Manufacturer, we ask that you process all warranty repairs through Duclos Lenses should the need arise. This allows us to monitor the results of our products as well as provide valuable feedback to the Original Lens Manufacturer. For additional questions, warranty or general service, please contact service@ducloslenses.com.