Cinema lenses are designed to achieve a shallow depth-of-field and a beautiful bokeh. But to do this they are typically large, heavy and expensive.
To this end, the MK lenses are said to offer “advanced edge-to-edge optical performance and low distortion.” Further, they are designed to offer integrated color temperature with other Fujinon Cine lenses (HK, ZK and XK series) for simplified color grading when recording video with multiple lenses. MK lenses will offer T2.9 speed across the entire zoom range.
Zoom lenses often struggle with focus shift when zooming, but the MK series’ front focusing group and zooming group of lens elements are driven independently to help suppress this issue, means you won’t need to re-focus after zooming. Similarly, the lenses are also designed to control optical shift while zooming, so that you won’t need to adjust your framing as you zoom.
Further, the lenses include three fully manual rings which independently control focus, zoom and iris. Operation rings have a gear pitch of 0.8M which allows for standard third party movie production accessories to be used.
MK lenses features:
- Advanced edge-to-edge optical performance and low distortion.
- Integrated colour temperature with other FUJINON CINE lenses in the HK / ZK / XK series to simplify colour grading.
- T2.9 speed across the entire zoom range which facilitates the increasingly popular style of bokeh effect with shallow depth-of-field. This also eliminates the need to re-adjust lighting, thereby contributing to shortening shooting time.
- 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), to achieve smooth focusing
- The lenses have a macro function that allows shooting close-up to broaden the range of scenes that can be covered with one lens.
- MK18-55mm: Minimum Object Distance*8 of 0.38m (wide end)
- MK50-135mm: Minimum Object Distance of 0.85m (wide end)
|Model name||FUJINON MK18-55mm T2.9||FUJINON MK50-135mm T2.9 (under development)|
|Zoom ratio||3.0 x||2.7 x|
|Image size||24.84mm × 13.97mm(φ28.5mm)||24.84mm × 13.97mm(φ28.5mm)|
|Minimum Object Distance (M.O.D.)||0.85m/2ft 9in
(0.38m/1ft 2.9in in the macro mode)
(0.85m/2ft 9in in the macro mode)
|Object dimensions (at M.O.D.)[Horizontal × Vertical] 16:9 aspect ratio||18mm： 924mm × 520mm
55mm： 291mm × 164mm
|50mm： 534mm x 300mm
135mm： 196mm x 110mm
|Angle of view [Horizontal × Vertical]16:9 aspect ratio||18mm： 69.2°× 42.4°
55mm： 25.5°× 14.5°
|50mm：27.9° x 15.9°
135mm： 10.5° x5.9°
|Number of iris blades||9||9|