Hasselblad Rear Cover Multicontrol for all TTL/OTF (all cameras)

Hasselblad's Rear Cover MultiControl 51070 fits all the Hasselblad camera bodies. With the cover in position you can see the so-called exit pupil of the lens through the small holes in the cover. For standard cameras and lenses without tilt and shift capabilities, looking through just one hole is enough.

A vignette free lens has an exit pupil the exact shape of the lens aperture. At maximum aperture, all lenses vignette slightly but at f/11 to f/16 the majority of lenses are vignette free.

Corner illumination is dependent on the size of the exit pupil. When the extension becomes too great, you can see how the area of the exit pupil diminishes.