Nikon D3 - Manual (Page 216)

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The Nikon Creative Lighting
System (CLS)
Nikon’s advanced Creative Lighting System (CLS) offers improved
communication between the camera and compatible flash units
for improved flash photography. The Creative Lighting System
supports the following features:
• i-TTL flash control: Improved through-the-lens (TTL) flash control
for use with CLS (see page 196). Flash level is set using monitor
pre-flashes to measure the light reflected by the subject,
ensuring that the level is adjusted appropriately for ambient
lighting.
• Advanced Wireless Lighting: Allows i-TTL flash control with remote
wireless flash units.
• FV lock (pg. 201): Locks flash level at the metered value, allowing a
series of photographs to be taken at the same flash level.
• Auto FP High-Speed Sync (pg. 200): Allows the flash to be used at the
highest shutter speed supported by the camera, making it
possible to choose the maximum aperture for reduced depth of
field.
The CLS-compatible D3 can be used for flash photography when
an optional Speedlight is mounted on the camera’s accessory
shoe. A flash can be used not only when natural lighting is
inadequate, but also to fill in shadows, illuminate back-lit subjects,
and even to add a catch light to the eyes of a portrait subject. See
the Speedlight manual for details.