Aetna Coligar 50/3.5 [V2]
Japanese-made enlarger lens sometimes marked Aetna Optix. AKA Perfex, Prinz, Soligor, Ampex, etc.
| Dimensions | 50 mm |
|---|---|
| Focal Length (mm) | 50 |
| Max Aperture (f) | 3.5 |
| Min Aperture (f) | 16 |
| Aperture Type | Curved 5 |
| Elements | 3 |
| Rear Mount | M39 |
| Front Thread | N/A |
| Serial Numbers | 51489, 91409 |
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