Mamiya 35mm back for 645 Super and Pro format_Instax Wide 75x (model SEL075UWC) is designed

75x (model SEL075UWC) is designed for use with Sony's FE 28mm f2 lens

Includes EW-73B hood

and checked it's accurate to within 1/3rd stop from LV5 (1s f8 200ASA) to LV15 (1/1000s f8 200ASA)

or hoping that your camera guesses correctly

Mamiya 35mm back for 645 Super and Pro format_Instax Wide 75x (model SEL075UWC) is designedThis Mamiya back lets you shoot plain old 35mm film in your Mamiya 645 Super or Pro camera. Yes, there's a crop effect (this is the APS C to 6x4. 5's "full frame") but you get 36 frames instead of 16, and it looks just like the normal 120 back, so your reputation as a big shot medium format shooter will remain intact. In excellent condition. Viewfinder mask is not included.