The Hasselblad E-12 magazine is specially designed to be used on 200 camera bodies, providing control dials for pre-setting of film speed. The dial settings are automatically transfered from the active electronics circuits in the magazine through the four contacts of the data-bus system to the central computer in the camera body. The film speed setting appears on the display in the viewfinder.

Remarks :

Care must be taken with the contacts between magazine and body. They should stay as clean as possible. If not, it is possible that the ISO speed is not correctly transmitted to the body.