Nikon 2192 User Manual - Page 18

■ The built-in flash and vignetting • The built-in flash cannot be used over distances of En less than 0.6 m (2.0 ft.). • To prevent vignetting, do not use the lens hood. * Vignetting is the darkening of the corners around the image that occurs when light emitted by the flash is obstructed by the lens hood, or by the lens barrel depending upon the focal length or shooting distance. Cameras Supported focal length/ Shooting distance D300-series/ • 18mm/1 m (3.3 ft.) or greater D200/D100 • 24mm or longer/No restriction D90/D80 • 24mm and 35mm/1 m (3.3 ft.) or greater • 50mm or longer/No restriction D70-series/ D5000/D3000/ • 24mm/1 m (3.3 ft.) or greater D60/D50/ • 35mm or longer/No restriction D40-series The built-in flash on the D100 has an angle of coverage suited to focal lengths of 20mm and greater. Vignetting occurs at a focal length of 18mm. ■ Using the lens hood The lens hood blocks light rays that have harmful effects on pictures. It also helps to protect the glass surface of the lens. Attaching the hood • Be sure that the lens hood mounting index (C) is aligned with the lens hood setting index (B) 3. • To facilitate attachment or removal of the hood, hold it by the lens hood attachment index (A) rather than its outer edge. • If the lens hood is not correctly attached, vignetting may occur. • The lens can be stored with the lens hood attached in the reverse position. 18