93Menu Guide / Custom Settings3 Position the subject in the center of the frame and press the shut-ter-release button halfway to focus. Check that the flash-ready in-dicator ( ) is displayed in the viewfinder.4 Press the FUNC. button. The flash will emit a monitor preflash todetermine the appropriate flash level. Flash output will be lockedat this level and a flash-value lock icon will appear in the view-fi nder.5 Recompose the photograph.6 Press the shutter-release button the rest of the way down to shoot.If desired, additional pictures can be taken without releasing FVlock.7 Press the FUNC. button to release FV lock and confirm that theicon is no longer displayed in viewfinder.17: Illumination (All Modes)If Off (the default option) is selected, the control panel backlight (LCDilluminator) will turn on only when the power switch is rotated to . IfOn is selected, the backlight will remain on while the exposure metersare active (note that this will increase the drain on the battery).Using FV Lock with Optional SpeedlightsFV lock is also available with SB-800, SB-600, and SB-R200 Speedlights (available separately). Set theSpeedlight to TTL mode (the SB-800 can also be used in AA and A modes; see the Speedlight manualfor details). While FV lock is in effect, flash output will automatically be adjusted for changes in Speed-light zoom head position.When Commander mode is selected for Custom Setting 22 (Built-in flash; 96), FV lock can beused with remote SB-800, SB-600, or SB-R200 flash units if (a) any of the built-in flash, flash group A, orfl ash group B is in TTL mode, or (b) a flash group is composed entirely of SB-800 Speedlights in TTL orAA mode.Using FV Lock with the Built-in FlashWhen the built-in flash is used alone, FV lock is only available if TTL (the default setting) is selected forCustom Setting 22 (Built-in fl ash; 95).
