The Hasselblad PM90 Prism Viewfinder is a 90°, low profile viewfinder, designed to view images at eye-level which is especially helpful in taking vertical shots when shooting in the 6 x 4.5cm format.
Note:
The PM90 Prism Viewfinder fits all Hasselblad 500 and 200 Series cameras but CANNOT be used with a Polaroid film back or Magazine 70
It has the same design as the PME90 metered prism but lacks an exposure meter
The 2x enlarged unreversed image covers the entire focusing screen
The PM90 comes with a high-eyepoint eyepiece which allows viewing with glasses
Interchangeable correction diopters are also available for this prism in strengths from -4 to +3