Nikon D780 DSLR Camera (Body Only) - Manual (Page 849)

803 Technical Notes
D Metering Areas for FV Lock
The areas metered when FV lock is used with optional flash units are as
follows:
D Notes on Optional Flash Units
• Refer to the flash unit manual for detailed instructions.
• If the unit supports CLS, refer to the section on CLS-compatible digital
SLR cameras. This camera is not included in the “digital SLR” category in
the SB-80DX, SB-28DX, and SB-50DX manuals.
• If the flash-ready indicator ( c ) flashes for about three seconds after a
photograph is taken in i-TTL or non-TTL auto mode, the flash has fired at
full power and the photograph may be underexposed (CLS-compatible
flash units only).
• i-TTL flash control can be used at ISO sensitivities between 100 and
12800.
• At ISO sensitivities over 12800, the desired results may not be achieved
at some ranges or aperture settings.
Picture taken with Flash control mode Metered area
Stand-alone flash unit
i-TTL
6-mm circle in center
of frame
Auto aperture ( q A)
Area metered by flash
exposure meter
Remote flash units
controlled via
Advanced Wireless
Lighting
i-TTL Entire frame
Auto aperture ( q A)
Area metered by flash
exposure meter Non-TTL auto (A)