Video Assist On Electronic Cameras
While the traditional video tap no longer applies to modern CCD based cameras, large-scale productions with HD or SD cameras still use video assist in its wider meaning. In this case, the video signal is fed from the camera's own video output, and is a significantly better quality than the original video tap technology. HD cameras can output HD-SDI video signals, which, when presented on a high-grade calibrated monitor, is an almost what-you-see-is-what-you-get quality. Because the video cameras are often less tolerant of images with high contrast and quick light changes, and their behavior is harder to foresee than a film camera, DPs shooting HD cameras are often found in darkened tents, watching expensive HD monitors to make sure the image is captured correctly. This situation is getting better as newer cameras tend to simulate film gamma curves better.
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