Lens shadowing occurs when the lens or lens hood blocks part of the output from the built-in flash. Lens shadowing appears as semicircular shaded area at the bottom (horizontal) or side (vertical) of´your image. • Make sure you are at least 1m (3.3 ft.) from your subject when using the built-in flash. • Remove the lens hood before using the built-in flash. • Lens shadowing may occur with the following lenses at shorter focal lengths. AF Zoom 17-35mm f/3.5G AF Zoom 28-70mm f/2.8G AF Zoom 28-85mm f/3.5-4.5 AF Zoom 28-135mm f/4-4.5 • The built-in flash can not be used with the following lenses: AF 300mm f/2.8 (APO tele) AF 600mm f/4 (APO tele) AF 300mm f/4 (APO tele) - use a external flash (e.g. 5600HS(D))