Aetna Macro Actinar 90/4.5

Japanese-made lens for Optika IIa (Rittenreck) 6×9 SLR camera. Also used as bellows and enlarger lens – probably AKA Aetna Coligar.

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Dimensions 95 mm
Focal Length (mm)

95

Max Aperture (f)

4.5

Min Aperture (f)

16

Aperture Type

Circular 10

Rear Mount

M39

Serial Numbers

27648

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