How to Reset Factory Settings on a Nikon D200by Gwen Wark ; Updated September 22, 2017
The Nikon D200 is a sturdy and practical camera body with a wide range of options. These options allow the photographer greater artistic control over the image. During the course of working with a Nikon D200 it may be necessary to restore the camera to factory settings, either to resolve an error or to easily make new changes from a fresh starting point. Nikon has made the process of restoring factory settings both quick and easy, which allows a photographer to perform this task without interrupting his workflow.
Locate the buttons marked "QUAL" and "+/-." These buttons will have a green dot next to them.
Press and hold the "QUAL" and "+/-" buttons simultaneously until the LCD screen blinks. This indicates factory settings have been restored.
Reset options such as ISO, white balance and file size before continuing work.