*2 16mm / 35mm cinema camera lens mount used by the world’s leading German cinema camera manufacturer Arnold and Richter Cine Technik
*3 Full transmission aperture is fixed in any focal length, and T number does not change when operating zoom.
*4 Distance between gear teeth
Key information
1. Product name: FUJINON cine lens XK6x20
2. Release date: Late June 2016
3. Main features:
(1) Advanced optical performance
・Featuring high-precision large-diameter aspherical elements designed with cutting-edge optical simulation technology. It delivers high optical performance and low distortion compatible with 4K cameras from the center to the edge of the screen, and delivers performance comparable to single focal length lenses for digital cinema camera in the entire zoom range.
・By integrating the colour temperature of the flagship model “HK series” and compact and lightweight model “ZK series”, colour grading*5 is simplified when using multiple lens models together.
・Featuring Flange Back Focus*6 Adjustment Mechanism, used in broadcasting lenses, for optimised mounting with cameras to bring out the full lens optical performance.
・Using a 9-blade round iris mechanism to achieve the iris shape as round as possible, enabling natural bokeh in images
 *5 Work to correct colour of images in editing work.
 *6 Image forming plane of lens can be adjusted to the optimum position according to flange back (distance from lens mounting reference plane to sensor) of each camera.
(2) Covers focal length from 20mm to 120mm and realises T3.5 brightness across entire zoom range
・Covering a wide field of view from focal length of 20mm to 120mm. Time and cost can be saved as the need to exchange the lens to a different focal length is unnecessary.
・Maintains T3.5 brightness over the entire zoom range. There is no T drop where T number changes according to focal length, enabling comfortable operation.
・Equipped with “macro function” which enables shooting as close as subject distance*7 of 40cm (11cm from front lens*8). It expands possible shooting scenes covered by a single lens.
*7 Distance from image forming plane to subject.
 *8 The foremost lens of the multiple-lens structure.
(3) Offers comfortable operability
・The gear pitch for the operation ring of focus, zoom and iris (aperture) is 0.8mm, the same as existing FUJINON cinema camera lenses, for compatibility with standard cine accessories.
・Focus ring realises moderate torque with 200-degree rotation angle to aid accurate focusing.
・The focus indicator ring is available in feet or meters.
(4) Equipped with detachable drive unit
・Equipped with a drive unit for electric zooming and focusing that offers the operability equivalent to conventional TV camera lenses.
・When the drive unit is not equipped, general full manual operation is possible in motion picture production scenes.
(5) Equipped with a “rotary encoder” which outputs lens data in high resolution
・Rotary Encoders are installed in the drive unit for high resolution output of lens position data, including zoom, focus, and iris.
4. Main Specifications:
Model name – XK6x20
Focal length – 20mm – 120mm
Zoom ratio – 6x
T-No. – 3.5
Object dimensions (at the M.O.D) [Horizontal × Vertical]
20mm 1109mm × 624mm
120mm 182mm × 102mm
Angle of view [Horizontal × Vertical] 16:9 aspect ratio
20mm 63°41′ × 38°30′
120mm 11°49′ × 6°40′
Approx. size (ö × Length)
ö114mm x 239mm
Approx. Weight
Approx. 2.9kg (with drive unit) / approx. 2.4kg (without drive unit)