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Video Production Menu: Raw Content Creation (Camcorders)
Parent Page
Digital Video in a Nutshell
Raw Content Creation
Raw Video to Computer
Edit Digital Video
Closed Captions
Video Without Camcorder
Prepare for Distribution
Place on Web
Place on CDs and DVDs

Contents of This Section:
Introduction: Why you should know how a camcorder works
How a Camcorder Creates a Motion Picture: From $500 to $130,000

Optical System
Detection System
Recording System
Recording Media and Formats

Audio
How to Choose a Camcorder: A Checklist

Examples of Affordable Digital Camcorders

Introduction: Why you should know how a camcorder works

When making purchasing decisions and during the production process, even an amateur video producer can benefit from a birds-eye understanding of some basic technologies used in camcorders. You can buy a low-end digital camcorder for about $500, but it will not be adequate for achieving the type of visual quality achieved (I presume) in Steven Soderbergh’s new motion picture “Full Frontal”, which was shot with Canon XL1S miniDV camcorders ($5,000 each). In turn, the Canon XL1S would not be adequate to achieve the visual quality desired by George Lucas (picture above) for “Star Wars - Episode II”, which he shot not with film cameras but with Sony HDW-F900 digital camcorders (picture above) that cost $130,000 each. What are the technical differences between a $500 camcorder, a $5,000 camcorder, and a $130,000  camcorder? And what are the differences in the quality of the outputs? Even if you can only afford the $500 camcorder, the answers to these questions will help you choose a camcorder and produce better video.

How a Camcorder Creates a Motion Picture:
From $500 to $130,000

The video portion of a camcorder has to do three basic things. First, the optical system has to feed an image into a light-sensitive detector. Second, the detector has to feed the electrical signals it generates to a recording device. Third, the recording device has to translate the electrical signal into a permanent stored signal on a recording medium. The audio portion of a camcorder goes through similar gymnastics starting with one or more microphones. I will first discuss the video portion in some detail.

Optical System

UNDER CONSTRUCTION HERE

Detection System

UNDER CONSTRUCTION HERE

 

Comparison of progressive (film type) image capture and interlaced image capture. Flag is moving to the right at 0.64 mph (11¼ inches/sec). For visual simplicity, I use only 12 scan lines per frame for my interlaced-scan demonstration.

BELOW: Observed in viewfinder at initial time (t = 0)

Observed in viewfinder at t = 1/30 sec.
A progressive-scan camcorder will capture this view as one frame.

BELOW: Captured by interlace-scan camcorder at t = 1/60 sec. This is the first field of one frame.

BELOW: Captured by interlace-scan camcorder at t = 1/30 sec. This is the second field of one frame.

RIGHT: The sum of the two fields above yields the frame on the right. The standard television signal in the United States (NTSC) consists of 60 fields/second and 30 interlaced frames/second. Most camcorders also use the NTSC format. In contrast, film cameras used for motion pictures obviously record in progressive-scan (non-interlaced) mode, at 24 frames/second.  

Recording System

UNDER CONSTRUCTION HERE

Recording Media and Formats

UNDER CONSTRUCTION HERE

Audio

UNDER CONSTRUCTION HERE

How to Choose a Camcorder: A Checklist

UNDER CONSTRUCTION HERE

Browse the Web sites of Canon, JVC, Panasonic, and Sony to see what is available now. Then get typical street prices in Web sites of vendors such as B&H-Photo-Video. If you are concerned about possible gotchas of a particular model (they all have them), I may be able to help.

Examples of Affordable Digital Camcorders

UNDER CONSTRUCTION HERE

Digital Video in a Nutshell Raw Content Creation Raw Video to Computer Edit Digital Video Closed Captions Video Without Camcorder Prepare for Distribution Place on Web Place on CDs and DVDs

This page last modified: 10 Jun 2002
Adam Allerhand © 2002