EE Aperture Control Attachment DS-1 Used in conjunction with the F2S Photomic, this ingenious attachment transforms the Nikon F2 into a fully automatic camera. It embodies a tiny servo motor which is activated by the exposure meter and automatically adjusts the lens aperture ring for the correct F/stop. The EE Aperture Control Attachment slips easily onto the front of the camera and automatically makes contact with the F2S Photomic without any cords. It uses a self-contained, rechargeable NC battery and works with all Auto-Nikkor lenses without any moddifications. The AC/DC Converter MA-4 with the DM-1 connecting cord is also available for the supply of DC power to the attachment from a house current.