Typing the copyright symbol, or ©, in Lightroom is simple! Hold down the ‘Alt’ key on the keyboard and type 0, 1, 6 and 9 on the numberpad. Voila! The copyright symbol appears. If it doesn’t work, be sure you are keeping the ‘Alt’ key pressed the entire time and use the numbers on the numberpad, not above the letters. UPDATED: Note that for the mac, the key press is option-g to type the © symbol.