Nikon 4622 MF-22 Date Data Back for F4 SLR Camera

The Nikon MF-22 Data Back is a dedicated accessory for the Nikon F4 and F4s professional SLR film cameras, replacing the standard camera back to add automatic date and time imprinting directly onto exposed film. This was a common feature in the film era, allowing photographers to maintain a chronological record without relying on separate logs or memory. The MF-22 supports multiple format options — Year/Month/Day, Month/Day/Year, Day/Month/Year, and Day/Hour/Minute — as well as a no-imprint setting for situations where a clean frame is preferred.

Installation is straightforward: the standard F4 back panel is removed via its hinge release, and the MF-22 clips into place. Once set, it operates automatically, imprinting small characters in the corner of each frame as the shutter fires. The data back maintains its own clock powered by a small coin cell battery, so it functions independently of the camera's main power supply. As a product designed for a specific professional camera system from the early 1990s, the MF-22 serves a niche audience of film photographers still shooting with the Nikon F4 — but for that audience, it remains a well-engineered and reliable tool.