Would you open the door of your apartment to a man who looked like this? The optical distrortion of the fish eye lens used in a wide angle door viewer(...)

Original Toronto Star caption: Would you open the door of your apartment to a man who looked like this? The optical distrortion of the fish eye lens used in a wide angle door viewer makes slightly grotesque-but always recognizable. More importantly, the viewer allows a person inside an apartment to scan every inch of the corridor in front of door. With better quality viewers no one can hide by crouching in front of door or flattening himself against a wall.