LOMO KO-120M 120mm ƒ/1.8
ЛОМО KO-120M | 1992 Belarusian 35mm cine projection lens (Petzval design)

made in 1992 by BELOMO, Minsk, Belarus

4/4 Petzval design
Carl Zeiss Jena Kipronar clone

620g
filter 72mm (no thread)
tubus 62.5mm
back focal length 52.43mm

90 lines/mm center
45 lines/mm corner

Vintage manual LOMO KO-120M 120mm ƒ/1.8 projection lens
E-mount converted with a focusing helicoid.

35mm projection lens made in 1992 by BELOMO (Minsk, Belarus)
4/4 Petzval design (Carl Zeiss Jena Kipronar clone)
90 lines/mm center | 45 lines/mm corner
620g | filter 76mm | tubus 62.5mm | back focal length 52.43mm

CONVERSION:
I disassembled a C/Y Kenko Macro Teleplus MC7 (Vivitar branded) and removed the complete optics, screwed & glued an ultraslim M42 -> E-mount adapter on back and put the lens on front - it has a 62.5mm tubus and the Kenko diameter is 61.4mm. Currently it's fixed with the photographer's best friend (gaffer tape) for test shootings, because the lens back focal length is 52.43mm and the Kenko length is 44mm (+18mm SONY FFL = 62mm), so I'll have to go to the lathe and shorten the tubus a bit (not much possible, though). As it is now it focuses from around 1:1 macro to extended portrait range.

The complete conversion to E-mount is described here: www.flickr.com/groups/2877726@N21/discuss/72157663844141431/
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