Tamron lenses

This 28-80 is a nice object, pretty-good optical quality, but I don't like using it, too dark. My advice is that the advertised aperture (3.5-4.2) is optimistic, count one value more...

There is no 105mm in the Zenit range of optics (there exists one for Kiev 19, that is to say using Nikon mount. Vade retro, Satanas!)
If I catch the idea of using this focal length, I have that!
Anyways it didn't cost me a lot!

I have Adaptall mounts for:
- M42 screw
- Pentax K
- Praktica PB
- Minolta MD
- Canon FD
- Nikon AI