| Brand | Coatings | Product line | Model | Aperture (ƒ) | Focal range (mm) | Optical Design (Elements / Groups) | Mount | Image Size | Filter size(s) | Serial # | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E Ludwig | Meritar | 2.9/50 | ƒ2.9 – 16 | 50 | 3 / 3 | M42 | 35mm | Front: 35.5 | 1532743 | Triplet lens design | |
| Count: 1 |
| Brand | Coatings | Product line | Model | Aperture (ƒ) | Focal range (mm) | Optical Design (Elements / Groups) | Mount | Image Size | Filter size(s) | Serial # | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E Ludwig | Meritar | 2.9/50 | ƒ2.9 – 16 | 50 | 3 / 3 | M42 | 35mm | Front: 35.5 | 1532743 | Triplet lens design | |
| Count: 1 |