Jupiter-37AM 135mm f/3.5
Facts
- an all-manual telephoto lens
 - estimated retail price 150 USD
 - in my use from 3/2008 to 12/2008
 - was made obsolete by Canon EF 135mm f/2.0 L USM
 
Pros
- nice natural colors
 - usable shapness and contrast even wide open
 - metal and glass only, no plastic here
 - can be a nice portrait lens
 
Cons
- nothing special, I was expecting something like MC Jupiter-9 85mm f/2.0
 - doesn't fall in the sharpest lenses category
 - quite stiff focusing ring