Mamiya Standard Range Diopter #DE401- The built-in diopter adjustment on the Mamiya 645 AF camera body ranges from -2.5 to +.5. There are three additional diopters (available separately) which provide increased dioptric adjustment of ranges from -5 to +2 and which fit in the viewfinder of the Mamiya 645 AF camera.
- Available diopters for the camera's viewfinder include
- Standard Range (DE401) -2.5 to +.5 (supplied with camera)
- Nearsighted Range (DE402) -5 to -2
- Farsighted Range (DE403) 0 to +3