Aetna Actinar 135/4.5

German-made all-silver lens marked with red Double-H, distributed by Aetna Optix (later BKA) for Exakta bellows mount. Also fitted to Mirrorscope. Perhaps made by Steinheil.

Dimensions 135 mm
Focal Length (mm)

Max Aperture (f)

Min Aperture (f)

Rear Mount





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