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 designed specifically for the Mamiya 645AF series of medium format cameras. It serves as the standard film magazine for these models, enabling use of 120 and 220 roll film in the 645 format (6x4.5 cm frame size). This unit is a complete, three-part magazine system that includes a removable 120/220 insert made by Mamiya. It incorporates a microprocessor that communicates electronically with the camera body, ensuring proper 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 built as a modular film magazine with a removable insert for 120/220 film, allowing flexibility in film use. Its integrated microprocessor enables electronic communication with the camera body, supporting accurate exposure control and frame tracking.
Market
Current listing prices for used HM401 units are around $830 SGD, with some showing heavy signs of use. It is currently out of stock across major retailers, with no new units available.
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