Canon's patent application details the disabling of parts of the touchscreen (the shaded area) depending on which is the photographer's dominant eye
Swiping the finger horizontally would change the aperture setting
Touchscreens have almost become standard on point and shoot digital compact cameras. The same can’t be said for more enthusiast/professional oriented DSLRs, mainly because of the different ways both types of cameras are used. Compacts are generally held out in front of the photographer who checks the framing via the camera’s LCD screen. DSLRs, on the other hand, are often still used with the photographer’s face mashed up against the rear of the camera to frame a shot using the optical viewfinder. This would wreak havoc with a touchscreen as the photographer’s nose goes about changing all those carefully nurtured manual settings. But a new patent application from Canon could solve the problem and see touchscreens appearing on DSLRs as well.
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