Nikon D90 user manual 270

Flash

Built-in flash	i, k, n, o : Auto flash with auto pop-up
	P, S, A, M: Manual pop-up with button release
Guide Number (m/ft)	• At ISO 200: Approx. 17/56, 18/59 with manual flash
at 20 °C/(68 °F)	• At ISO 100: Approx. 12/39, 13/43 with manual flash
Flash control	• TTL: i-TTL balanced fill-flash and standard i-TTL flash for digital SLR
	using 420-segment RGB sensor are available with built-in flash and
	SB-900, SB-800, SB-600, or SB-400
	• Auto aperture: Available with SB-900, SB-800 and CPU lens
	• Non-TTL auto: Supported flash units include SB-900, SB-800, SB-28,
	SB-27, and SB-22s
	• Range-priority manual: Available with SB-900 and SB-800
Flash mode	• i, k, n: Auto, auto with red-eye reduction; fill-flash and red-eye
	reduction available with optional flash units
	• o: Auto slow sync, auto slow sync with red-eye reduction; slow sync
	and slow sync with red-eye reduction available with optional flash
	units
	• l, m: Fill-flash and red-eye reduction available with optional flash
	units
	• P, A: Fill-flash, rear-curtain with slow sync, auto slow sync, slow sync
	with red-eye reduction, red-eye reduction
	• S, M: Fill-flash, rear-curtain sync, red-eye reduction
Flash compensation	–3 – +1 EV in increments of 1/3 or 1/2 EV
Flash-ready indicator	Lights when built-in flash or optional flash unit such as SB-900, SB-800,
	SB-600, SB-400, SB-80DX, SB-28DX, or SB-50DX is fully charged; blinks for
	3 s after flash is fired at full output in i-TTL or auto aperture modes
Accessory shoe	Standard ISO 518 hot-shoe contact with safety lock
Nikon Creative Lighting	Advanced Wireless Lighting supported with built-in flash, SB-900,
System (CLS)	SB-800, or SU-800 as commander and SB-900, SB-800, SB-600, or SB-R200
	as remotes; Auto FP High-Speed Sync and modeling illumination
	supported with all CLS-compatible flash units except SB-400; Flash Color
	Information Communication and FV lock supported with all CLS-
	compatible flash units
White balance
White balance	Auto (TTL white-balance with main image sensor and 420 segment RGB
	sensor); 12 manual modes with fine-tuning; color temperature setting;
	preset white balance; white balance bracketing
Live view
AF modes	Face-priority, wide area, normal area
Autofocus	Contrast-detect AF anywhere in frame (camera selects focus point
	automatically when face-priority AF is selected)

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