Big old Tamron 80-250mm f3.8 - this can be found as an adaptamatic (this one) and an adaptall, the
Z250. An interesting old lens to check out. Pics: samsung NX20. The mount is a diy'ed PK see
here.
(can't get pics in the right order)
1. Gull keeping a weather eye out for some chips f8.
5. Jackdaw being more proactive about it f8.
2. Tourist eating aforementioned chips, f3.8 ~135mm, this came out way better than wide open shots of white gulls at 250mm which were rather soft and "glowy".
4. What yer lookin at!!
3. 1:1 full sized crop. Stopped down this lens can hold its own against far more modern lenses - it was a pricy premium lens in its day.