[Molly Sherrick Phifer]

I like the idea of the child setting putting the camera in continuous focus mode, however, the setting I'm talking about is one of the numerous little icons on the dial on top of the camera that puts the camera either in full automatic, aperture priority, shutter priority, full manual, or one of several "special" modes. Each of those modes simply programs the camera with a series of settings to maximize the ability to shoot those types of pictures. Here's what Nikon says about the programmed settings:

7 Digital Vari-Programs: The next evolution of Nikon's scene-optimized Digital Vari-Program modes produces great results for the intended shot, while freeing you to concentrate on the moment. New Child mode makes it easier to take memorable pictures of the children with the right amount of vivid color and contrast straight from the camera. Choose from Auto, Portrait, Landscape, Child, Close Up, Sports, or Night Portrait.

I think the body styles of the two cameras are sufficiently similar that you would not have difficulty switching. The D50 is a bit simpler.