We celebrated Thanksgiving at my wife's sister's house. After dinner, we wanted to look something up on the Internet, and our niece brought out her MacBook Pro. While we were looking at an image on her screen, her Mom, who owns an iPad, did a swipe move that she normally uses on the iPad on the screen to enlarge the image. It didn't work, and my niece said, "Thanks, Mom, for putting at big thumbprint on my screen!" We all laughed, but it raises a serious question: how much sense does it make to use the screen on the camera -- which is also used to view, frame and define the image -- as the touch screen for controlling the camera? For viewing the image, you want as clean a screen as possible. For controlling the camera, you want to touch the screen with your potentially grubby paws. Does anyone else see a potential conflict here? (Heck I put screen protectors on my cameras to keep them as pristine as possible). Maybe somebody who owns a touch-screen camera can chime in with their experience.