when the quality of the videotape recording was directly
related to the tape format. The old standard used to be,
the wider the tape, the higher the quality of the
recording. Anything smaller than the l-inch videotape
was considered small format and inferior in quality.
Today, 1/2-inch Betacam SP can provide equal or
superior quality compared to the large-format, l-inch
machines. The Hi8 video camera (8mm) is superior to
the 1/2-inch VHS cameras. Today, "small format" is
used mainly to describe small, highly portable television
equipment, such as small camcorders. Like all
implies inferior quality.
the video hardware, the resulting picture is only as good
tape, or emulsion side, that faces the video recorder
heads is highly polished to maximize tape-to-head
contact and to minimize wear on the heads.
the tape clogs the video recording heads, you cannot
play back or record. Normally, the heads will clog after
recording or playing back half a dozen or so tapes. You
manufacturer's recommendations or according to
causing a "hole" or line of missing information in the
picture when it is viewed on the monitor. Dropout
darting across the picture. The main causes of dropout
are dirty heads or imperfections in the tape. Once
dropout occurs, it cannot be replaced or corrected on the
color. Black and white or color depends solely on
whether the camera and monitor are black and white or
gathered by the camera lens (b), and focused on the face
of the camera pickup tube (photocathode) or a
sensitive dots. As light from a particular part of the scene
falls on each dot, the dot becomes electrically charged.
brightness of the scene. An electron beam in the pickup
tube emits a steady beam of electron particles. This
photocathode and reads over it in a series of lines. The
scanning beam neutralizes each picture element or dot
signal). These currents are proportional to the charge
through the lens.
converted back to visible screen images in the
screen can respond to any new light it receives.
Basic Photography Course