MInolta Focusing Screen 9 Type M - Alpha 9 Dynax

Type M - Super Spherical Acute Matte - New in box

Designed for use with large aperture lenses

• The Type M screen provides better focus definition when large aperture lenses (faster than f/2.8) are used. The viewfinder image may not be as bright as that provided by the Type G, S, and L screens when used with smaller aperture lenses. 

Compatibility 
This is compatible with all variants of the Minolta A-9 Camera