Yashica 40/3.5
AKA Hoya / Osawa Tominon / Bogen / DO Industries enlarger lens
| Dimensions | 40 mm |
|---|---|
| Focal Length (mm) | 40 |
| Max Aperture (f) | 3.5 |
| Min Aperture (f) | 16 |
| Aperture Type | Straight 6 |
| Elements | 6 / 4 |
| Rear Mount | M39 |
| Production | 1979-1990 |
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