A camera for making an exposure based on a preset value of shutter time with common display elements for selectively presenting displays of a clock and the value of shutter time, in which the display elements normally display the clock, and, when presentation of the preset value of shutter time is indicated...http://www.google.com.tw/patents/US5130742?utm_source=gb-gplus-share專利 US5130742 - Camera having selectable white balance modes
