It is acrylic material, Super bright, Light transmittance better than ground glass. Not fragile.
New Super Bright 8X10 inch Focusing Screen Ground Glass for Large format Camera
Super Bright 8X10 inch Focusing Screen Ground Glass for Large format Camera New
Canon F-1N SB matte screen focusing screen Japan new 655/24
Canon F-1N PJ matte screen focusing screen Japan new 656/24
Canon F-1N SC matte screen focusing screen Japan new 660/24
Canon F-1N PK matte screen focusing screen Japan new 657/24
