Specs:


Image quality

Build quality

Very nice and solid.
It also have a great feel to it.


Conclusion

Really lovely lens at almost all point.

Image quality is great but has some noticeable corner softness at bigger apertures.
Otherwise nice sharpness, contrast and bokeh.
Do prone to flare quite a lot in backlight which I quite expected.
This flare can however give a nice warm feel to the shots which can look great.
But this can of course also be something you don't want in some occasions.

One of the m42 gems, these can often be found cheap which gives this nice lens great value for the money.


Thumbs up:
Image quality
Build quality
Contrast / Bokeh
Flare / backlight if you like it's look


Thumbs down:
Corner sharpness at bigger apertures
Flare / backlight if you don't like it



Technical Info

Analogue B&W film
Scanner: Plustek OpticFilm 7600i
Film: Kodak Tmax 100
Developer: Kodak Xtol

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