| Produced | 2000, KMZ, Russia |
| Film type | 135 (35mm) |
| Frame size | 24 x 36mm |
| Lens mount | M42 |
| Lens | MC Zenitar-M2s, 50mm, f/2 – f/16, focusing range 0.35m – infinity |
| Focusing | manual, split-image rangefinder with microprism and ground glass rings |
| Exposure meter | TTL system, integral, with LED viewfinder display |
| Shutter | double cloth curtain |
| Shutter speeds | 1/30 – 1/500, B |
| Other | Self-timer hot shoe |
| Weight | 820 g |
| Serial number | 20002918 |

Zenit 312m top

Zenit 312m bottom

Zenit 312m back

Zenit 312m with open back

Zenit 312m body and removed lens

Zenit 312m with strap and case