Tamron-F AF Teleconverter 2X N-AFd MC7 for Nikon F wide angle Nominally for Bellows Focusing Attachment

Nominally for Bellows Focusing Attachment 2

so it'll work just fine on any manual focus K mount camera

Full automatic function with a zoom head to accommodate lenses from 28-70mm

Good light seals

The AH focusing screen for the Canon New F-1 is a matte screen with horizontal and vertical scales marked in mm

Tamron-F AF Teleconverter 2X N-AFd MC7 for Nikon F wide angle Nominally for Bellows Focusing AttachmentThe Tamron F AF Teleconverter 2X N AFd MC7 for Nikon F is a 2x teleconverter that can double the focal length of a compatible lens, at the cost of two stops of light. Compatibility is pretty good: itll work with most lenses that dont have a protruding rear element. It even transmits pin drive AF function, which no Nikon branded teleconverter does. In very good condition, with minor cosmetic barrel wear, light internal dust.