This Mamiya Focusing Screen Type "C" Microprism Spot is optimized for critical manual focusing. It has a central microprism focusing collar which will help those who have difficulty focusing with a plain matte screen. This screen is still calibrated for the camera's metering system.

This focussing screen is compatible with:
- Phase One XF
- Phase One and Mamiya 645DF+
- Phase One and Mamiya 645DF
- Phase One 645AF
- Mamiya 645AFD III, 645AFD II and 645AFD

Phase One part number: 70758
Mamiya Leaf part number: 800-57300A