Vivitar 55mm f2.8 Auto Macro for M42 brand_Pentax This F-1 includes the AE

This F-1 includes the AE prism

Enables eye level viewing with your favourite 500- or 2000-series body

with a real optical viewfinder and full manual control

1 Arrilite 1K open-face flood

camera mount is a standard 1/4" thread

Vivitar 55mm f2.8 Auto Macro for M42 brand_Pentax This F-1 includes the AEThe Vivitar 55mm f2. 8 Auto Macro is a good quality macro lens for M42 thread mount. The "standard" 55mm focal length makes this an easy lens to use day to day, and it'll provide lifesize (1: 1) macro when you need it, without the use of extension tubes. Impressive! In excellent condition, with minor internal dust, very minor cosmetic wear.