Pentax K100D medium format The Contax auto extension tube

The Contax auto extension tube set for Contax-Yashica mount includes one each of 13mm

Important wrinkle: the Medalist is designed for 620 rollfilm and will not work with 120 film out of the box

use the included MS-D12 insert and it can power your camera with 8 AA batteries

including the A7 series)

Pentax K100D medium format The Contax auto extension tubeThe Pentax K100D is a K mount APS C format camera with shutter speeds from 30s to 1 4000s. It has a 6 megapixel CCD sensor with a built in shake reduction system and, perhaps best of all, runs on 4 standard AA batteries. Compatible with nearly all Pentax K mount lenses, manual or autofocus. This one has just under 20k actuations and is in excellent cosmetic condition, with only minor wear.