The Video Camera

ObjectiveHow does a camera work & the basic

camera functionsReview the different types of camerasHow to set up a camera and tripod

Pieces & Parts To make an image all cameras need 3 basic

parts:

The Lens

The Viewfinder

The Imaging Device

The LensIt determines what you seeAll lens are not the same! Lens are the most expensive part of the

camera and sometimes cost more than the camera itself!

They are classified in two ways: - Focal Length - Angle of View (wide & narrow)A Zoom lens has a variable focal length

Zoom ZoomOptical zoom - The zoom range: How close can you get

from the farthest point - Optical zoom range is expressed in a

ratio: 10:1, 20:1 etc.Digital zoom - Also expressed in a ratio: 10:1, 15:1 etc - The focal length does not change; the

image is magnified - The more you zoom in, the less sharp the

image becomes

Optical vs. Digital Zoom

IrisAll lens have an irisIt allows how much light is coming into the

lensActs like the pupil of your eye - In a bright scene, the less the iris is open - In a dim scene, the iris opens to let more

light in

Aperture: Adjustable hole in iris

Beam Splitter

Splits light into Red, Green & Blue

CCD

CCD

CCD

The Viewfinder

Types of CamerasCamcorders - Camera & recording device are combinedENG/EFP Cameras - Camera is attached to a separate recording

device by a cable - PortableStudio Cameras - Stationary in studio - High quality - Uses camera chain: camera, power, sync &

camera control unit

Video ConnectorsBNCS-VideoRCA phonoFirewire