The zoom lenses maintain a constant T2.9 aperture across the entire zoom range
According to Fujifilm, manufacturing technology developed for conventional FUJINON cinema lenses was applied to control the optical axis shift on the MK cinema lenses while zooming. The front inner-focusing system controls lens breathing, allowing for smooth focus over an entire scene. Additionally, when zooming, focus shift is suppressed by independently driving the front focusing group and zooming group of lens elements away from each other.
Both lenses employ manual rings for focus, zoom and aperture. The focus ring rotates 200 degrees and all the rings are geared for industry-standard accessories.
The FUJINON MKX18-55mm T2.9 consists of 22 glass elements and stops down to T22. It can focus on objects as close as .38m. The lens will ship in the summer and is available for pre-order now for $4,000.