A shutter operating system is provided that depends on electromagnetic
energy to operate shutter blades. A permanent magnet and solenoid system
operate the shutter blades. Movement of the magnet causes the shutter
blades to move between an open and a closed position over a lens. The
permanent magnet can be moved between a pair of spaced coils by
selectively energizing first one coil then the other. The magnet can be
attached directly to a shutter blade or in the case of a rotary shutter,
the magnet can be attached to a drive ring that in turn is mechanically
coupled to the shutter blades.