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Cosina Cosinon Auto MC 135mm F2.8

Reviews Views Date of last review
3 30,151 Tue September 15, 2015
Recommended By Average Price Average User Rating
100% of reviewers $26.67 8.00
Cosina Cosinon Auto MC 135mm F2.8

Serial number 780333
six aperture blades (curved)
minimum focus distance 5 ft (1.5 meters)
filter thread 55 mm
weight 420 g
built-in hood
Mount Type:
Price History:

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Senior Member

Registered: December, 2013
Posts: 223
Lens Review Date: September 15, 2015 I can recommend this lens: Yes | Price: $20.00 | Rating: 7 

Pros: uniform sharpness, solid build
Cons: full stops, the coating
Sharpness: 9    Aberrations: 7    Bokeh: 6    Handling: 7    Value: 8    Camera Used: Chinon ce-3   

good build quality which was unexpected, actually prefer it over the takumars when shooting with kodak technical pan, ilford sfx or agfa apx

colour wise its more neutral/natural when using e6 and c41 film
at f5.6 contrast is in between rikenon and takumar, infact f2.8 the contrast is good and f4 very good with no massive shift in colour unlike the takumars

Registered: September, 2010
Location: Manchester, UK
Posts: 2,557
Lens Review Date: March 30, 2013 I can recommend this lens: Yes | Price: $20.00 | Rating: 8 

Pros: Cheap, reasonably sharp stopped down
Cons: Soft at f2.8
Sharpness: 9    Aberrations: 9    Bokeh: 9    Handling: 8    Value: 8   

Another eBay impulse buy. Nicely built, well damped long throw focus, built-in lens hood. My copy has quite a lot of flare when wide open, which makes it appear quite soft at this aperture with plenty of fringing. Things improve considerably when stopped just one click down at f4 or more - it sharpens up considerably. Very nice bokeh. Some flare. Contrast can be quite poor requiring some post-processing. Hardly any CA or distortion.

Not at all bad for 12.

The first shot is at f2.8. The second and most of the others are at f5.6.

New Member

Registered: November, 2009
Posts: 1
Lens Review Date: March 5, 2011 I can recommend this lens: Yes | Price: $40.00 | Rating: 9 

Pros: Sharp, cheap, nice colours, very good bokeh
Cons: A bit of CA and spherical aberration, shows some flare

A great 135. Nice sharpness already at f=2.8 and with good contrast. Bokeh is lovely and color rendition is nice, too.

Only downsides are some CA and spherical aberration visible at very harsh contrast edges. As most seasoned lenses also this one is a bit prone to flare.

But that said, the lens gives great results under field conditions. Has produced many keepers at indoor sports events and when shooting portraits from a distance.

This is the 135 that has made me stop trying out other alternatives in this length segment. Definitely recommended, especially given the low price.
My favourite taken with this lens:

Update: I for some strange reason my copy of this lens would not step down on the K5, whereas on the K200D it does. I guess the aperture mechanism is a bit stiff and the K200D is a bit more tolerant regarding this respect. Not a big issue, though, as I mostly use this lens wide open anyway.
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