Nikon D90 User Manual
Page 290
270
n
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)