925 Flash output level compensationYou can make exposure compensation for the flash illuminated subjectwithout affecting the background exposure by modifying the flash unit’sflash output level. Setting the flash output level compensationAs a basic guide, some plus compensation may be necessary to make the mainsubject brighter. Likewise, some minus compensation may be required to makethe main subject darker.In TTL auto and Auto Aperture flash operations (with theSB-800)Making exposure compensation for a flash illuminated main subject by adjustingthe SB-800’s or Commander SU-800’s flash output level compensation value.• Compensation values can be set in 1/3 step increments or decrements from +3.0 to-3.0 EV.• Flash output level compensation cannot be canceled by turning the flash unit off. Tocancel, return the compensation value to “0”.• With SLR cameras featuring a built-in flash with an exposure compensation function, youcan compensate the flash output level on either the camera or the SB-800 or SU-800 flashunit. (For details, see your camera’s instruction manual.) If you use both controls, theexposure is modified by the sum total of both compensation values.• In this case, the LCD panel of the flash unit (SB-800 or SU-800) shows only thecompensation value set on the flash unit (SB-800 or SU-800).In Manual flash modeMaking exposure compensation for only the flash illuminated subject byintentionally modifying the flash unit’s flash output level. Notes on performing Auto Aperture flash operation with theSB-800.Depending on shooting circumstances, underexposure may occur. Using theTTL auto flash mode is recommended when using a camera compatible with TTLauto flash.