Vivitar 2X Macro Focusing Teleconverter for Pentax K brand_Printfile It’s called a “Snapshot Skopar”

It’s called a “Snapshot Skopar” because it’s not rangefinder coupled: the focusing ring turns normally but also features a couple of handy click stops to set hyperfocal distances

and Nikkormat FTN

with good metering and accurate speeds throughout the range

This Nikon drop-in gel filter holder fits the Nikon 300mm f4 AF Nikkor lens and other lenses which use 39mm-sized drop-in filter holders

Vivitar 2X Macro Focusing Teleconverter for Pentax K brand_Printfile It’s called a “Snapshot Skopar”The Vivitar 2X Macro Focusing Teleconverter MC is a 2x teleconverter with a neat trick: it's also a helicoid that allows closer focusing with any lens. In excellent condition, with clean glass. PK A mount accepts any K mount and transmits electronic exposure information for K A types.