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Fujifilm MKX 50-135mm T2.9 Lens

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With over 30 Years experience In the photographic industry
  • Covers Super 35 Format
  • Fuji X-Mount with Electrical Contacts
  • Consistent T2.9 Aperture Over Zoom Range
  • 3 x Standard 0.8 MOD Gears
  • Clickless 9-Blade Iris
  • 200° Focus Rotation and Macro Mode
  • Color Matched to Fujinon HK/ZK/XK Series
  • 85mm Front Outside Diameter
  • Weighs 2.16 Pounds
  • Flange Focal Distance Adjustment

The Fujinon MKX50-135mm T2.9 Lens in X-Mount is a lightweight cine-style zoom lens for X-mount cameras with a Super 35mm-sized sensor. The electrical contacts within the lens mounts allow communication with X-series cameras. It features a mechanical design with three independent lens control rings: focus, iris, and zoom. Each ring incorporates a cine-style gear with a 0.8 MOD for interfacing with standard cine-style lens accessories. The focus ring features approximately 200° of rotation, which provides room for precise focus pulls, and the iris is clickless, enabling smooth iris pulls. The lens also incorporates a macro mode for close focusing capabilities.

The lens is colour-matched to other Fujinon lenses such as the HK, ZK, and XK series, which enables smooth intercutting between lenses. The 85mm front enables use with many cine-style matte boxes via the use of optional step-up rings (rings not included). The lens weighs only 2.16 pounds, which is fairly light for a cinema zoom that holds focus and aperture throughout the focal length range. It is designed for cameras with a Fuji X-mount, so it has a short flange focal distance, but the lens allows flange focal distance adjustment so you can fine-tune it to the camera you are using the lens on.

The electrical contacts within the lens mount enable communication with X-series cameras, which allows for the correction of distortion and colour/brightness shading to prevent vignetting. This communication also enables you to achieve a variety of colour expressions when using Film Simulation modes.
T2.9 to T22 aperture with 9 iris blades for attractive bokeh
The 28.5mm diameter image circle covers the 3-perf super 35 format with a 16:9 aspect ratio
Industry-standard 0.8 film pitch gears for focus, zoom, and iris control
The gear ring positions for focus, zoom, and iris are located at the same position on both lenses in the MKX series, making switching between the two zooms quick as you don’t have to adjust the position of lens accessories
Both lenses in the MKX series have the same weight and length so there is no need to rebalance your camera when you change from one lens to the other
200° focus barrel rotation
No shims are required to adjust the flange focal distance as this lens has a built-in adjustment mechanism
Macro focus function available


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Focal Length
50 to 135mm
Lens Mount
Lens Format Coverage
Image Circle
28.5 mm
Maximum Aperture
Minimum Aperture
Minimum Focus Distance
From: 3.9′ / 1.2 m
Optical Design
22 Elements in 17 Groups
Diaphragm Blades
Gear MOD & Pitch
Focus: 0.8 MOD / 32 Pitch
Iris: 0.8 MOD / 32 Pitch
Zoom: 0.8 MOD / 32 Pitch
Front Diameter
85 mm
Filter Thread
82 mm
Focus Rotation
Zoom Ratio
Electronic Communication
Image Stabilization
Lens Support
1/4″-20 Mounting Thread
8.12″ / 20.62 cm
2.2 lb / 1 kg
Packaging Info
Package Weight
4.555 lb
Box Dimensions (LxWxH)
15.05 x 7.55 x 7.45″

  • Zoom Lever
  • Support Foot
  • Lens Hood

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