Asahi S3 Extension Tube Set  type_Projectors a pretty good EVF

a pretty good EVF

the BL-3 chamber cover

it does have a PC sync connection)

with Nikon's premium ED optics and an accurate Copal 1 shutter

The Contax 139 Quartz is a compact 35mm SLR film camera with a Contax/Yashica lens mount

Asahi S3 Extension Tube Set &nbsptype_Projectors a pretty good EVFThe Asahi S3 extension tube set includes three M42 thread mount extension tubes: roughly 9mm, 19mm, and 29mm, for a total of about 57mm extension when combined. These a re manual tubes: there is no stop down mechanism built in. In excellent condition, though the black finish has faded to a (honestly very cool) blue grey colour. Includes case.