Mamiya's RZ67 portrait-normal — the electronic leaf-shutter Sekor Z 127mm f/3.5 W for 6x7.
The Mamiya Sekor Z 127mm f/3.5 W is a short-tele normal lens for the Mamiya RZ67 medium-format system. It sits just above the 90mm standard lens in the Z line, offering a slightly longer normal favoured for portraiture on the 6x7 format. The W marks it as part of the wide-to-normal working-lens group.
This is a manual-focus lens native to the Mamiya RZ67 bayonet mount, with a focal length of 127mm and a maximum aperture of f/3.5. It contains an electronically timed leaf shutter controlled by the RZ67 body, with the aperture set on the barrel and focusing by the camera bellows. The design covers the full 6x7 image circle.
At 127mm on 6x7 the perspective corresponds to roughly a 62mm lens on 35mm, a flattering length for portraiture with gentle compression. The electronic leaf shutter integrates with the RZ67's metering and allows flash sync at all speeds. The lens delivers even sharpness across the large frame when stopped down, making it a versatile portrait-leaning normal.
The Z 127mm f/3.5 W is a common RZ67 lens and appears regularly on the used market. Because its leaf shutter is electronic, confirm correct firing at all speeds on a working body and watch for erratic timing. Inspect the glass for haze and fungus, confirm the aperture is dry, and verify the bayonet and electrical shutter coupling engage properly before buying.