Nikon SPEEDLIGHT SB-5000 Fast Track Manual page 8

ADVANCED WIRELESS LIGHTING
Glossary
Ambient Light
The natural, available light in a scene. Also known as
existing light.
AF-Assist Illuminator
LED light on the camera that illuminates the subject,
making it possible to focus on the subject even in total
darkness.
Automatic Power Zoom
The zoom head is automatically adjusted according to the
focal length of the lens in use.
Backlighting
The light coming from behind the subject.
Bounce Lighting
Using the bounce feature on a Speedlight, light is
bounced off a ceiling or wall to soften or diffuse the
light's intensity.
CLS
Creative Lighting System — Nikon's Speedlight system.
Commander
Commander function: Controls remote flash units without
firing flash during exposure.
Feathering
Panning or tilting the light so that its dim edge is used to
light the subject.
Flash Output Level Compensation
Flash compensation used to increase or decrease the
output power of a Nikon Speedlight unit.
Fill-Flash
A technique to brighten dark shadow areas, often used
when the subject is located in the dark shadow.
Fill Light
A light that supplements the key light without changing
its character, used to lighten or open shadows within
a scene.
Front Lighting
Light coming from the direction of the camera toward
the subject.
FP Auto High-Speed Sync
Auto high-speed flash synchronization enables CLS-
compatible cameras and Speedlights to sync at the
camera's highest possible shutter speed. This technique
minimizes depth of field and freezes high-speed subjects.
Flash Synchronization
A means by which a Speedlight is fired at precisely the
moment when the camera's shutter is at its peak opening.
Also referred to as flash sync.
Front Curtain Sync
Also referred to as Normal sync, the flash fires
immediately after the front curtain opens completely.
FV Flash Value Lock
Locks in the appropriate flash exposure for the main
subject, which remains locked whether the aperture,
composition or lens zoom position is changed.
Guide Number (Flash)
Guide numbers proclaim the light output of electronic
flash units. The guide number divided by subject distance
represents the power of the Speedlight: usually in feet
or meters.
i-TTL Metering
Nikon's Intelligent Through-The-Lens (TTL) flash metering
using monitor pre-flashes for unprecedented levels of
precision and performance.
Key Light
Also called "main" light, is the principal source of light on
a subject or a scene.
Master Speedlight Unit
Controls remote flash units while firing flash during
exposure.
Monitor Pre-Flash
A series of pre-flash firings detected by the camera's TTL
multi-sensor, analyzed for brightness and contrast. Also
used to communicate output values to remote Speedlight
units in multiple wireless lighting.
Optical Control
Using pulsating beams of light (pre-flash) that travel in a
direct line-of-sight between a camera based transmitter
and flash based receiver.
Quick Wireless Mode
The flash output level ratios of two remote flash unit
groups (A and B) can be easily balanced in quick wireless
control mode.
Radio Control
Speedlight transmits data via radio frequency.
Rear Curtain Sync
The flash fires just before the rear (second) curtain starts
to close, for special effects photography where the blur
appears behind the subject.
Reflectors
Flat devices, typically white, silver or gold, that redirect
light to soften or fill in areas of a subject or scene.
Remote Speedlight Unit
A remote Speedlight's flash fires only when triggered by a
master flash unit or a commander.
Repeating Flash
The Speedlight delivers a stroboscopic effect, firing the
flash continuously at selected rates.
Side Lighting
Light shining on the subject from the side relative to the
camera, often casting long shadows.
Slow Sync Flash
The flash is controlled at a slower shutter speed to obtain
the correct exposure for both the main subject and the
background in low light situations or at night.
TTL
Through the lens. Any metering system — ambient
exposure metering or flash metering — which works
through the lens.
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©Dave Black
To learn more about wireless flash and other great photo topics,
visit us at: online.nikonschool.com
©Joe McNally
©Dave Black
©Dave Black
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