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Fujinon MK50-135mm Compact Cine E-Mount Zoom T2.9
Fujinon MK50-135mm Compact Cine E-Mount Zoom T2.9

Product Overview
The Fujinon MK50-135mm is a T2.9 E-mount compact cine zoom lens featuring a 2.7x zoom ratio, close focus of 3'11", length of 20.63cm and a front diameter of 85mm.
Abel Code FI-MK50-135MM
Mfr. Code MK50-135
Availability Summer 2017
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This lightweight Fujinon MK 50-135mm Cine Zoom Lens is ideal for indie filmmakers or the run-and-gun single shooter using a shoulder rig and a Sony E-Mount camera. The MK lenses are both fast and affordable by comparison to other cine lenses on the market. Image coverage is 28.5mm diagonal. In Super35 16:9 format that is 13.97mm x 24.84mm.

You can swap lenses on your rig with ease between this MK 50-135mm lens and the MK 18-55mm (sold separately). Focus, iris, and zoom gear rings are in the same position for this pair of lenses which launches the MK Lens family. In addition, no adjustments would be required when switching MK lenses if you are using both a follow focus and a mattebox due to same exterior dimensions (85mm outside and 82mm filter). With a common weight, you can also switch between the MK Lens family lenses without adjusting balance.

The E-mount short flange back helps deliver the lightweight size of these lenses. It also assisted Fujinon in providing a constant T2.9 aperture. 

Fujinon’s MK Lenses produce high quality imagery and deliver a number of advantages.

Suppress Focus Shifts During Zoom

Unlike conventional DSLR lenses where the focal point shifts while zooming, the Fujinon MK lenses retain the focal point so you do not need to refocus when you shift the angle of view. MK Lenses suppress focus shifts by driving the front focus group and the zoom group independently.  The lenses eliminate time lags normally found with electronic controls by suppressing both optically and mechanically. A convenient example of this is available in our photos. 

Zoom & Conquer Optical Axis Shifts

The MK Lens family reduces the optical shift which occurs in a DSLR lens while zooming. Fujinon adapted assembly technology from their other cine lens lines when designing the MK lenses. That means you gain the benefit of a zoom which stays composed on your subject. An example of this is available for your review in the photos.

Subdue Lens Breathing

DSLR lenses produce an unnatural change in the angle of view and magnification which creates lens breathing. MK lenses suppress lens breathing because of their internal focus system. The photo comparison Fujinon uses (see our photos to view it) shows how a DSLR lens will seem to expand or breathe after you focus. Some bloggers explain this phenomenon by framing a doorway or a definable image so you can clearly see the change from maximum to minimum focus distance. 

Integrated Color Temperatures

Match your existing Fujinon Cine Lenses in the HK, XK, or ZK families with integrated color temperatures. Your post production team will thank you when you deliver A and B camera footage which matches color temperature.

Bokeh Effects

The 9-blade iris helps produce a beautiful bokeh. 

200° Focus Rotation Angle

Typical DSLR lenses provide only a 100-degree angle while the MK Lenses offer double that with 200-degrees. With the MK lenses you can focus on images with shallow depth of field and capture with high accuracy. Zoom is 90° and Iris is 60°.


Additional lens features:

  • Macro function
  • T2.9 across zoom range
  • Back focus adjustment
  • 3 mechanical lens rings (focus, zoom, iris)
  • 0.8M standardized gear pitch (all Fujinon Cine Lenses)
  • Seamless iris for less noise and vibration
  • Made in Japan


NOTE: MK lenses do not include the ability to transfer lens data.

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