It is Fresnel screen,Ultra bright.
Made of high quality optical PMMA to ensure its brightness
The texture is only 0.1mm, which can't be seen by the naked eye and can only be seen under the magnifier.
Size 205x250x1.5mm
Suitable for Universal focusing screen works for 8x10 large format camera, like Chamonix Camera
Pls Note: place the Fresnel in front of the ground glass, the matt surface towards the lens, the bright surface towards the ground glass.