Made between: 1979 to 1984

Specs:

Focal length: 135mm	Weight: 475g (with the PK mount)
Optical design: 4 elements in 4 groups	Mount: Tamron Adaptall-2
Aperture: f/2.5 to f/32 8 bladed aperure	Covers: Standard 35mm film size (24×36 mm negative)
Closest Focus: 1.2m (4ft)	Filter Size: 58mm

Built-in extendeable hood


Image quality


Build quality

Very well made and are solid as a rock.
The feel is also very good but the built in lens hood is a bit loose and floppy.


Conclusion

Looks and feels great and image quality is good.
Focus goes a little closer than most which is always nice.
It is also a very short and fast focus ring and you go from infinity to 1.2m by turning less than 180°.
Which I usually find to be good and I do so in most cases here too.
But this do make it a little more tricky to fine focus but I can't say that it is a big problem.

Image quality is like I mentioned before nice.
Biggest thumbs up is its bokeh which looks really great.
Sharpness is also good and it renders well.
Wide open do as some colour fringing but not too bad.

Overall really great lens.


Thumbs up:
Image quality
Bokeh
8 bladed aperure
Build quality & feel
Closest Focus: 1.2m (4ft)


Thumbs down:
Lens hood is a bit loose and floppy.

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Technical Info
Scanner: Plustek OpticFilm 7600i
Film: Kodak Tmax 100
Developer: Kodak Xtol

Digital
Canon 500D with lens mount adapter
Auto White Balance and ISO 100