Mamiya 90mm f/3.8 Sekor C Lens (1974)
A standard prime lens for the Mamiya RB67 medium format camera system, introduced in 1974.
Overview
This is a fixed focal length prime made by Mamiya for the RB67 camera system. It was announced in 1974 and is now discontinued. It covers the 6x7 image area and works as a standard lens for that format. It uses a bayonet mount and has a built-in Seiko #1 leaf shutter with speeds from 1 second to T (time),
Specifications
| Maximum format | Medium format 6x7 |
| Focal length | 90mm |
| Speed | f/3.8 |
| Lens construction | 7 elements in 5 groups |
| Mount | Mamiya RB67 |
| Shutter | Seiko #1 lens shutter |
| Shutter speed scale | T, 1 to [range incomplete] |
| Product type | Standard prime lens |
| Production status | Discontinued |
| Announced | 1974 |
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.