|Montgomery Ward xp 501, image by mar_nyc||EE-Matic Deluxe, image by Gustavo65|
The Konica EE-Matic Deluxe was a rangefinder camera with selenium meter controlled exposure, made by Konica in 1963. It was also marketed as Wards xp 501 by Montgomery Ward. The built-in meter was called "electric eye". Its window was around the lens opening, within the filter thread. The selenium photo cell behind that window automatically controlled shutter-speed/aperture setting. The actual speed was shown by an indicator in the optical bright-frame viewfinder. There was also an indicator for under-enlightment in the finder.