Nikon COOLPIX P900 Reference Manual - Page 740

D Metering Areas for FV Lock The areas metered when FV lock is used with optional flash units are as follows: Picture taken with Stand-alone flash unit Flash control mode i-TTL Auto aperture (qA) Metered area 6-mm circle in center of frame Area metered by flash exposure meter Remote flash units controlled via Advanced Wireless Lighting i-TTL Auto aperture (qA) Non-TTL auto (A) Entire frame Area metered by flash exposure meter 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 64 and 12800 (Z 7II) or between 100 and 12800 (Z 6II). • At ISO sensitivities over 12800, the desired results may not be achieved at some ranges or aperture settings. 698 Compatible Flash Units