Description
Technical specifications:
· Focal length 55mm
· Aperture range f1.8-f16
· Number of diaphragm lobes 6
· Single-layer enlightenment
· MDF 0.5m
· Helikoid stroke 270°
· Body material aluminum alloy
· Mounting connecting thread M42 with PO 45.5mm
· 6 in 4 optical circuit (doublehouse)