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5 0 1850
4.75 0 2044
4 0 1286
4 0 1123
Owner reviews: KO-140М 140 mm f/ 1.8
- good sharpness of focussed part of image
- fast aperture
- very shallow DOF
- interesting bokeh
- very strong field curvature
- low contrast
- no focussing mechanism
I use this lens on full frame Canon 5DIII for portraits. Lens don't have any focussing mechanism, so you must DIY or buy one. Lens can be sharp, but has very strong field curvature. Bokeh has tendency to swirl.
p.s. Back focal distance (from lens): is not 52.43 mm, but about ~63mm