Tamron-F 2x PZ-AF BBAR MC7 teleconverter for Pentax K brand_Lowepro but will cover Super 16

but will cover Super 16 image area

This is a compact manual-focus teleconverter for Nikon F-mount lenses

8 lens for C mount

You will need to respool 120 film  onto a 620 spool yourself

A classic medium format SLR camera in great shape

Tamron-F 2x PZ-AF BBAR MC7 teleconverter for Pentax K brand_Lowepro but will cover Super 16Tamron F 2x PZ AF BBAR MC7 teleconverter for Pentax K mount cameras and lenses. This is an "autofocus" teleconverter with passthroughs for electronic contacts and mechanical focus coupling. So it will autofocus in theory, but autofocus performance will vary with lens, camera, and shooting conditions so don't bet the farm on it.