Vivitar 628AF Ni camera flash This dedicated Vivitar Electronic Flash Unit is designed specifically for Nokon Auto Focus 35mm SLR cameras. It provides automatic through-the-lens (TTL) flash exposures. In addition, when the light is too dim for the camera to autofocus, the flash’s built-in illuminator automatically provides a source of light for the camera to autofocus. This allows you to take sharply focused pictures in very low light or even in total darkness. The auto focus mode selector on the front of the camera must be in the ‘S’ setting in order for the Auto Focus Illuminator to function. There are two modes of automatic TTL flash operation available with Nikon SLR AF camera: Program and Aperture Preferred. Original instruction manual will be provided.
