I picked up a zenitar 16mm f2.8 very used for about $40.
When I first got it it would NOT focus beyond a few feet... I was sad.. then goggled and fixed it in 5 minutes..
http://etischer.com/zenitar/zenitar16mm.html
https://www.youtube.com/watch?v=veqicndXuwA
nice flare and pretty sharp. Not very "fisheyed" on the crop sensor cameras..
When I first got it it would NOT focus beyond a few feet... I was sad.. then goggled and fixed it in 5 minutes..
http://etischer.com/zenitar/zenitar16mm.html
https://www.youtube.com/watch?v=veqicndXuwA
nice flare and pretty sharp. Not very "fisheyed" on the crop sensor cameras..