LockCircle has announced the new Prime Circle XT-F prime lens series in Nikon fit. Built around the world-class optics of the Carl Zeiss ZF.2 lenses, the Prime Circle XT-F lineup spans focal lengths ranging from 15mm to 135mm. Prime Circle XT-F lenses are custom mounted ZF.2 lenses offering “in-house” assembling by professional and passionate technicians. Each Prime Circle XT-F lens boasts an ultra-lightweight Ergo-Focus gear for follow-focus, a Front Mount 95mm standard ring-mount for matte-boxes and cine-style accessories plus an aluminium cap with clear graphics displaying the lens’s focal length and maximum aperture. The X-Circle F-Mount stainless steel heavy-duty bayonet features “Side Index View” for focus and aperture scales on the side for comfortable focus-puller work. The lenses can be ordered now, with worldwide delivery within 3 to 4 weeks.