Minolta Maxxum AF APO Tele 300mm f2.8  type_Developing Tanks The Asahi Attachment Lens is

The Asahi Attachment Lens is a close-up diopter for lenses with a 67mm filter thread

and they make fantastic all-weather cameras for rainy days or camping

with two anchors

Note that this mount does not include screws: you've got to use your old ones

it weighs only one solitary kilo

Minolta Maxxum AF APO Tele 300mm f2.8 &nbsptype_Developing Tanks The Asahi Attachment Lens isThe Minolta Maxxum AF APO Tele 300mm f2. 8 is a big, fast telephoto lens with excellent image quality a true professional telephoto for the Minolta Maxxum mount. This one's in pretty decent cosmetic condition overall, though there is some wear and discolouration of the white paint finish. Focusing is good, aperture moves well, and the glass has some dust but that's about it. Imaging is excellent. Includes 114mm front protective filter and a set of