| Brand | Coatings | Product line | Model | Aperture (ƒ) | Focal range (mm) | Optical Design (Elements / Groups) | Mount | Image Size | Filter size(s) | Serial # | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ricoh | Auto Rikenon EE | 1:1.7 f=50mm | ƒ1.7 – 16 | 50 | 6 / 4 | M42 | 35mm | Front: 52 | 006785 | Acquired with Vivitar XC-3 in trade for some other camera stuff | |
| Ricoh | Rikenon | 1:2 50mm | ƒ2 – 16 | 50 | K | 35mm | Front: 52 | 148420 | Part of a bundle with cameras and flashes. | ||
| Count: 2 |
