Hasselblad Focusing Screen Adapter 41025 (SWC/M)
For checking on picture composition and depth-of-field. Attached to the camera in the same way as film magazines. Extraneous light is effectively blocked out by using the optional magnifying hood 52094, the standard focusing hood 42315/42323, a prism viewfinder, or the reflex viewfinder. Can also be used on the 500C/M, 500ELX and the 2000FCW, as well as the earlier models in the 500C, EL and 2000 series.