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Cosina Cosinon-S 50mm F1.8 Review RSS Feed

Cosina Cosinon-S 50mm F1.8

Sharpness 
 9.0
Aberrations 
 8.5
Bokeh 
 9.0
Handling 
 9.0
Value 
 10.0
Reviews Views Date of last review
3 39,312 Tue June 15, 2021
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Recommended By Average Price Average User Rating
100% of reviewers $28.33 9.00
Cosina Cosinon-S 50mm F1.8

Cosina Cosinon-S 50mm F1.8
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Cosina Cosinon-S 50mm F1.8
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Cosina Cosinon-S 50mm F1.8
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Description:
Cosinon-S 50mm F1.8

Focal length 50mm
Max. aperture f/1.8
Min. aperture f/16
Blades 6
Min. Focus 0.5 (m.)
Filter 49 (mm.)
Weight 190/6.7 (gr/oz)
Length 50/2.0 (mm/in)
Mount Type: Pentax K
Price History:



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Author:
Sort Reviews by: Date | Author | Rating | Recommendation | Likes (Descending) Showing Reviews 1-3 of 3
Junior Member

Registered: May, 2015
Posts: 33
Review Date: June 15, 2021 Recommended | Price: $20.00 | Rating: 10 

 
Pros:
Cons:
Sharpness: 9    Aberrations: 9    Bokeh: 10    Handling: 10    Value: 10    Camera Used: K3   

Looks like a pretty good lens, especially for that time. I bought it second hand around 7y ago when i bought my first Pentax, a KX with 18-55, and cannot afford an AF prime lens at that time... i used rarely for a couple of portraits and deposit on a box... today i found it and i said to myself... 'uhhh... let's see what this lens can do on my k3'. Pretty nice details. I used the 'catch in focus' function.

   
New Member

Registered: November, 2013
Posts: 14
Review Date: August 21, 2015 Recommended | Price: $35.00 | Rating: 9 

 
Pros: very sharp lens
Cons: nearly nothing
Sharpness: 9    Aberrations: 8    Bokeh: 8    Handling: 8    Value: 10    Camera Used: k200,k-x   

very similar to Pentax lens 1.8/55

6/5 element construction.

++ very good color rendition,

+++ really very high sharpness, especially at f 5.6-11

+ very small CA's wide open, disappear if lens is stopped down a few

++ very good contrast

8.5 points

highly recommended
   
New Member

Registered: September, 2010
Location: Czech Republic
Posts: 12
Review Date: August 4, 2011 Recommended | Price: $30.00 | Rating: 8 

 
Pros: Sharp even wide open, nice bokeh, no CA
Cons: Could be faster

Very good and sharp lens, my most used MF lens, great for portraits.


Some examples, all shots wide open:


Nelča by ricolek, on Flickr


Lukinek by ricolek, on Flickr


Forest in Modrá by ricolek, on Flickr


Kapky by ricolek, on Flickr
Add Review of Cosina Cosinon-S 50mm F1.8



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