| Dimensions | 55 mm |
|---|---|
| Focal Length (mm) | |
| Image Circle (mm) | |
| Max Aperture (f) | |
| Production | |
| Serial Numbers |
Carl Zeiss Jena R-Biotar 55/0.85
Rare Biotar X-ray lens likely co-developed with the 100/0.73 for use on the RK70 Röntgenkamera 70 (AKA ‘Jena 70’) for fluorescent screen photographs.
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