Mamiya Digital Imaging has announced its new line of M series digital backs for the Mamiya 645AFDIII: the M18, M22 and M31.

The difference between these medium-format backs lies primarily in the resolution quality and ISO range. The M18 has an 18-megapixel resolution and a film speed range of ISO 100 to ISO 800; the M22 has a 22.1-megapixel resolution and a film speed range of ISO 50 to ISO 800; and the M31 has 31.6-megapixel resolution and can capture images up to ISO 1600.

All three backs have a 12-stop aperture range and a 2.2-inch LCD display.

Each digital back can be purchased separately or in a system kit with the Mamiya 645AFDIII camera and Sekor 80mm f/2.8 D lens.

Pricing is to be announced.