Nikon autofocus speedlight SB-900 User Manual page 53

t
Monitor pre-fl ashes
• In i-TTL mode, immediately before the flash fires, the SB-900 fires a series of
imperceptible pre-flashes to analyze the information of the subject.
SB-900 flash shooting distance range
t
Auto setting of ISO sensitivity, aperture and focal length
When using with a CLS-compatible camera and a CPU lens, SB-900's ISO sensitivity,
aperture and focal length are automatically set according to camera setting.
• For more information about the ISO sensitivity range, see the camera's
user's manual.
The flash shooting distance range is
indicated by numbers and a bar chart
on the LCD.
• Set the shooting distance within this range.
• The range varies depending on ISO
sensitivity, camera's image area
setting, illumination pattern, angle
of coverage and aperture. For more
information, see "Specifications."
(kF-16)
D
D–3