Being a fan of catadioprics, I was intrigued by this lens for some time..
When I saw the add on ebay, I decided to bite in.
The preliminary results are attached below.
Lens is decently sharp in the centre, a bit of coma in corners.
Not easy to focus, but this has to be done only once in a while anyway... I plan to add the ring which will fix the focus barrel..
Not bad for $150
