Docter 135/4.5
Tessar enlarger lens made at the former Zeiss facility in Saalfield. Markings vary: early versions tend to be Docter Jena; later Docter Wetzlar. Most single-coated, but post-1993 samples may be multicoated.
| Dimensions | 135 mm |
|---|---|
| Focal Length (mm) | 135 |
| Max Aperture (f) | 4.5 |
| Min Aperture (f) | 32 |
| Aperture Type | Circular 10 |
| Elements | 4 / 3 |
| Front Thread | M40.5×0.5 |
| Rear Mount | M39 |
| Production | 1984-1996 |
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