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โCamera Types
Since each cameraโs fields of view must encompass the entire performance (unless there are many overlapping cameras), at any time the actor is usually a small portion of the frame. This makes progressive DV, HD, or film source material strongly suggested.
Progressive-scan cameras are strongly recommended, to avoid the factor of two loss of vertical resolution due to interlacing. This is especially important since the tracking markers are typically small and can slip between scan lines.
While it may make operations simpler, the cameras do not have to be the same kind, have the same aspect ratio, or have the same frame rate.
Lens distortion will substantially complicate calibration and processing. To minimize distortion, use high-quality lenses, and do not operate them near their maximum field of view, where distortion is largest. Do not try to squeeze into the smallest possible studio space.
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