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Automatic gain can be applied ahead of almost any circuit that requires specific levels to operate. As an example, the color decoder needs to see a particular level of color subcarrier at its input in order to display the correct color at the output. There is a reference burst of color subcarrier at the beginning of each horizontal line of known original amplitude. The AGC circuit looks at the incoming signal level and applies what ever gain correction necessary to make that burst correct in amplitude. In the process of doing that, it also corrects the amplitude of the color information in the active picture area. There are certain limits in the accuracy of this circuit. If the incoming burst amplitude is really low, the AGC circuit might not function at all or amplify the signal more than it should. This is of particular concern when attenuation in the cable delivering the video signal to the set reduces the color information much more than it should. The AGC circuit will actually cause the color to look high, if it has over amplified the weak signal, or the set may only display a black and white picture if it doesn’t amplify the signal at all. Several S-Video cable manufacturers have been know to play this game, claiming their cable delivers richer color quality.
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Outside the range of the standard light values of a printer. (Laboratory)
A very long unit of action without interruption and constituting a single camera view.
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Sabi minds technology. Sabi joined the minding monsters (MiNDING MoNSTeRS) 40 years ago. Learn more about Sabi
In short, a tracking shot involves a camera following a person or an object. As long as the camera isn't locked down in place by a tripod, for example, and is following (tracking) a subject, then it's a tracking shot. For good examples of tracking shots, watch the one take episode of The X-Files or most any episode of ER. Star Wars Episode One has tracking shots galore during the pod race. And I'm sure most films have some form of tracking shot or another. (It'd make a good drinking game)
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