SMC Pentax 300mm f4 format_620 This is an "autofocus" teleconverter

This is an "autofocus" teleconverter with passthroughs for electronic contacts and mechanical focus coupling

This chrome Hasselblad Magazine 12 is in reasonably good condition

This is a complete Nikon F3 250-shot outfit with the MD-4 motor drive

they're easy to install

Unlike most black and white film

SMC Pentax 300mm f4 format_620 This is an "autofocus" teleconverterThe SMC Pentax 300mm f4 lens is a solid, high quality telephoto lens for Pentax K mount. Smooth focusing, clean glass. Not a tiny lens, and it's got some heft, but it takes a pretty nice picture. In excellent cosmetic condition overall, with minor paint wear.