http://www.nikonchat.com/settings-nikon-d90/

Nikon D90 image overlay?
I just bought a Nikon D90 yesterday. Later, when I was shooting a portrait picture, there was overlap image in one shot. is this normal? settings 18 to 55 lens F5.6 1 / 125 ISO 320 still had an overlay image, even equipment. happened once though. is this normal?
It just shot up on the LCD screen, not the image that you copy to your computer. If it is overlapping real image found on the menu in-camera retouching, looks on page 218 of the user manual.