Specs:

Focal length: 28mm	Weight: 190g
Optical design: ???	Mount: Pentax K (PK) But can also be found with other mounts.
Aperture: f/2.8 to f/22 6 bladed aperure	Covers: Standard 35mm film size (24×36 mm negative)
Closest Focus: About 0.21m (0.69ft) Macro scale 1:4.5 on a full frame	Filter Size: 49mm (non-rotating)

Image quality


Build quality

It's all metal and are very solid and well built.
The feel of this is also very good.


Conclusion

Did not have very high expectations of this lens but must say that it is quite the positive surprise.
Sharpness wide open is not that great but workable in my book.
Stop it down a little and you can get some very nice quality images.
Bokeh looks great and it also handles flare / backlight well.

A nice plus is also the closest focus which goes down to about 0.21m (0.69ft).

Somewhat unknown lens which usually are very cheap and has a good value for the money.


Thumbs up:
Image quality stopped down
Value for your money
Bokeh, flare and backlight
Build quality and feel

Thumbs down:
Sharpness wide open

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Technical Info

Analogue
Camera: Chinon CG-5
Scanner: Plustek OpticFilm 7600i
Film: AGFA CINEREX (X-ray film)
Developer: Kodak Xtol

Digital
Canon 500D with lens mount adapter