• Description: Overstock from my lab. This high definition lens has manual fine focus and zoom. You can attach infinity-corrected modules (Mitutoyo, Motic, etc...) via Navitar ring. It needs back adapter to mount camera. I tested it as it is (no additional front lens) with a 1-6118 1x RA adapter (not included). Last picture shows rule through normal camera lens, and previous 3 pictures show same rule under this lens. It is good up to at least 2/3" sensor. I used a 20mpx bigger sensor (Samsung NX1100 camera), and it shows minimal vignetting. Pictures have not been edited and set up was not professionally fixed. 
• Issues: like-new in all repects. Maybe some small nick here and there in body, but lenses are superb. No dust no haze, no scratches, etc...