CKBK ( LOMO department ) Fast anamorphic zoom lens

40-120 mm F2.5 35 OPF-19-1A

with front anamorphic components.

LOMO 35 OPF -19-1A 40-120 F2,5 anamorphic zoom lens, original OST-19 lens mount.

This is full range anamorphic zoom lens with front side anamorphic components with front focus compensator components and rear spherical zoom parts with fixed focus position.

The optical schematic similar modern Hawk, Elite Optics, last series BAS LOMO anamorphic lenses with round front glasses.

The collimator test of 35 OPF-19-1A 40-120 mm

The two front components ( from left side) – mobile optical compensator components, use for focusing a full optical system.

The next 3-5 components – anamorphic.

All next components – spherical zoom lens 40-120 mm F 2.5, adjusted on “ infinity “ focus.

The optical schematic of OPF-19 zoom lens have high optical ( film test ) resolution:

70 lines per mm at centre on 40 mm zoom position and T2,5

And 50 lines per mm at centre on 120 mm zoom poison and T2,5

The light-diffusing factor 3% only.

Zoom 40 mm T5.6

Zoom 45 mm T5.6

Zoom 50 mm T5.6

Zoom 60 mm T5.6

Zoom 75 mm T5.6

Zoom 85 mm T5.6

Zoom 100 mm T5.6

Zoom 120 mm T5.6

Origial OST-19-144 lens mount,

PL mount upgraded version of lens mount