As camera sensors have changed in size, from model to model, so too must their appropriate focusing screens--and their appropriate crop marks as well. The apertures in the 36 x 48 Focusing Screen for RZ67 Cameras and an Aptus II 7 Digital Back from Mamiya are different for different digital backs, and each is designed specifically for the given combination of camera and digital back.
The 36 x 48 Focusing Screen is great for accurate composition when using an Aptus II 7 digital back, when combined with a RZ67 camera. It is useful for general purpose photography, and is designed to fit and function perfectly within this unique system.
Designed to fit 36 x 48 sized RZ67 cameras and an Aptus II 7 digital back only