Nikon D500 用户手册

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页码 428
206
5
Lock flash level.
After confirming that the 
flash-ready indicator (
M) is displayed in the viewfinder, press 
the control selected in Step 1. The flash will emit a monitor 
preflash to determine the appropriate flash level. Flash 
output will be locked at this level and FV lock icon (
e) will 
appear in the viewfinder.
6
Recompose the photograph.
7
Take the photograph.
Press the shutter-release button the rest of the way down to 
shoot. If desired, additional pictures can be taken without 
releasing FV lock.
8
Release FV lock.
Press the control selected in Step 1 to release FV lock. 
Confirm that the FV lock icon (
e) is no longer displayed in the 
viewfinder.