Nikon SB 900 User Manual - Page 88
Making exposure compensation - in the dark
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Flash modes and functions Flash output level compensation and exposure compensation Making exposure compensation Exposure compensation allows you to make both the subject and background brighter or darker by intentionally modifying the correct flash exposure. This is useful when a subject of extremely high or low reflectivity is included in the scene or when you want to create flash photographs to match your creative preferences. • Some plus compensation may be necessary when the background includes a highly reflective surface. Likewise, some minus compensation may be required when the background is dark or includes subjects of low reflectivity. ■ In i-TTL and Auto Aperture flash mode • Make exposure compensation on the camera. For more details, see your camera user's manual. D ■ In Non-TTL auto flash and Manual flash mode • In the Non-TTL auto flash mode, the correct exposure can be obtained when the same aperture is set on the camera as that set on the SB-900. Therefore, to make exposure compensation, vary the aperture set on the camera while retaining the aperture set on the SB-900 or vice versa. • In the Manual flash mode, calculate the proper aperture for the correct exposure from the guide number and the shooting distance (kD-22). Then, use a larger or smaller aperture on the camera to make exposure compensation. • As a basic guide, set a wider aperture on the camera or lens to make the main subject brighter or a smaller aperture to make it darker. D-38
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