Nikon SB-5000 Podręcznik Fast Track - Strona 8

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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.

©Dave Black

To learn more about wireless flash and other great photo topics,

visit us at: online.nikonschool.com