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Nikon D90 User Manual

Page 290

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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 20 °C/(68 °F)

• At ISO 200: Approx. 17/56, 18/59 with manual flash
• 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
System (CLS)

Advanced Wireless Lighting supported with built-in flash, SB-900,
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)