Been prototyping an instax “back” for the pentax 67. Basically replaces the rear door. I gotta say, I love how sharp instax is, when using a proper lens. : r/instax
Pentax 67 MLU with Waist Level Finder SMC Pentax 90mm F/2.8 Lens, Focus Handle, Wooden Handle, Stra — F Stop Cameras
Asahi Pentax 6x7 Film Camera SMC Takumar 3.5/55 Polaroid Back
Pentax 67 Medium Format Film Camera Modified Polaroid Back #12616d5
Polaroid back for Pentax 6 x 7/67 - Camera City
Pentax 67 NPC Polaroid back cover – Kamerastockholm