Mamiya RZ67 telephoto zoom with leaf shutter, constant f/5.2 covering 50-100mm equivalent on 6x7 medium format.
The Mamiya Sekor Z 100-200mm f/5.2 is a telephoto zoom for the Mamiya RZ67 medium format system, providing a range equivalent to approximately 50-100mm on 35mm film. The constant f/5.2 aperture is modest but maintains consistent exposure across the zoom range, and the lens covers the entire 6x7cm frame.
The zoom range spans standard through portrait telephoto perspectives on the RZ67's large 6x7cm format, making it a versatile choice for photographers who want to avoid changing lenses during portrait sessions or location work. The built-in leaf shutter enables flash synchronisation at all speeds for studio and outdoor fill flash work.
Build quality is substantial all-metal construction that matches the professional-grade standards of the RZ67 system. The zoom mechanism is smooth and the focusing ring provides precise control needed for the shallow depth of field inherent in large-format medium format photography at telephoto focal lengths.
The Sekor Z 100-200mm f/5.2 offers practical zoom versatility within the RZ67 system at reasonable used prices. While it lacks the speed of prime alternatives, the convenience of zoom framing combined with medium format quality and leaf shutter flash capability makes it a useful working lens for professional medium format photographers.