Mamiya HM401
A 645 format roll film back for Mamiya 645AF series cameras, supporting both 120 and 220 film
Overview
The Mamiya HM401 is a film back made for the Mamiya 645AF series of medium format cameras. It is the standard film magazine for these models and takes 120 and 220 roll film in the 645 format (6x4.5 cm frame size). It is a complete, three-part magazine system, and the removable 120/220 insert is made by Mamiya. A microprocessor in the back talks to the camera body electronically, which handles exposure and frame counting.
Specifications
| Format | 645 format (6x4.5 cm) |
| Film type | 120/220 |
| Dimensions | 99 x 88 x 53 mm |
| Weight | 422g |
| Compatibility | For Mamiya 645AF, 645AFD, 645AFD II, 645AFD III |
| Construction | Three-part magazine with removable 120/220 insert |
| Electronic feature | Incorporates a microprocessor that communicates with the camera body |
Design
The HM401 is a modular magazine with a removable insert for 120/220 film, so you can switch between the two. The built-in microprocessor talks to the camera body and handles exposure control and frame tracking.
Market
Used HM401 units are listed at around $830 SGD right now, and some show heavy wear. Major retailers are out of stock, and no new units are available.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.