KO-140М 140 mm f/ 1.8 Lens

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Format: APS-C (crop)

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: Other mount

Optical design: 4 elements in 2 groups

User reviews (1)

Photos (17)

Tests (0)

Owners (1)

Views (12858)

Average price: $30

Specifications:

Focal length	Max. aperture	Min. aperture	Blades	Min. Focus (m.)	Filter Ø (mm.)	Weight (gr/oz)	Length (mm/in)
140mm	f/1.8	f/1.8	no			778/27,4	181/7,1

Additional information:

The KO-140М is a fast lens designed for projecting 35 mm motion pictures. The lens employs a four-lens aplant design, also known as the Petzval lens. This results in a considerable field curvature.The optical elements are covered with a single-layer chemical coating.

Additional information:

Back focal distance: 52.43 mm
Resolution (projecting), center/edge: 75/40 lpmm
Rim diameter: 62.5 mm
Max. diameter: 87 mm

Posted by: kleo59 Date of publication: 24.03.2013

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Photos taken with this lens KO-140М 140 mm f/ 1.8:

All photos

Couple
Autor: AdisX

3125

Girl portrait
Autor: AdisX

4.75

3300

Girl portrait
Autor: AdisX

2523

Girl portrait
Autor: AdisX

1856

Mechanical quality	3.80	5
Optical quality	3.80	5
Usability	1.80	5
Pricing / Value	3.60	5
Bokeh	3.80	5
Overall lens rating	3.36

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Owner reviews: KO-140М 140 mm f/ 1.8

AdisX 04.04.2015 14:12:51

Period of use: 3 months

Strengths:

good sharpness of focussed part of image
fast aperture
very shallow DOF
interesting bokeh

Weaknesses:

very strong field curvature
low contrast
no focussing mechanism

Comments:

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

Comments (0)