
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