The lens delivers high optical performance and comfortable operability for professional video shooting. Along with MKX18-55mmT2.9, MKX50-135mmT2.9 is the first full manual cinema lens to be compatible with the X Series interchangeable camera. In the 35mm format equivalent, MKX50-135mmT2.9 covers a focal distance from 76mm to 206mm and achieves a constant T2.9* aperture across the entire zoom range, enabling a shallow depth of field as well as a beautiful bokeh effect. The lens design is optimized for shooting videos as it minimizes focus shift and optical axis shift while zooming, and reduces lens breathing (the change of angle of view during focusing). The lens also features three rings to enable manual and independent operation of focus, zoom and iris (aperture), all with the gear pitch** of 0.8M (module). The focus rings can rotate fully up to 200 degrees to facilitate precise focusing. These features make the lens very comfortable and convenient to operate
* T-stop value is an index that indicates brightness of a lens based on its F-stop value and transmission rate. The smaller the value, the greater amount of light the lens transmits.
** Distance between gear teeth.
The front focusing group of lens elements and the zooming group of lens elements are driven independently from one another to suppress focus shift while zooming, which eliminates the need to re-focus after zooming in or out. The optical and mechanical approach means there is no time lag as seen in an electrical control system.
The use of the front inner-focusing system controls lens breathing (change of angle of view during focusing which achieves smooth focusing in an impressive scene.
Manufacturing technology developed for conventional FUJINON cine lenses is applied to control optical axis shift while zooming, achieving intended composition every time.
* Distance from the image-forming plane to a subject
** The position of lenses' image-forming plane can be adjusted according to each camera's flange focal distance (distance from lens mounting reference plane to sensor
|Lens configuration||22 elements 17 groups (includes 2 extra low dispersion elements and 2 super extra low dispersion elements)|
|Focal length||f=50-135mm (76-206mm)|
|Angle of view||31.7° - 12.0°|
|Min. aperture||F22 - Close|
|Focus range||1.2m / 3ft. 11in. - ∞
[with wide macro function 0.85m / 2ft. 9in. - (at wide end)]
|External dimensions : Diameter x Length* (approx.)
* distance from camera lens mount flange
|ø87mm x 206.6mm|
*excluding caps, hoods, support foot, and tripod collar foot)
|Accessories included||Tripod collar foot
Lens rear cap RLCP-001
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