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Both tape types use tiny metal particles to retain the magnetic charge that is the recorded video signal. Each has its own strengths and weaknesses based on the process used to put these particles on the tape. In MP (metal particle) tape, the tiny magnetic particles are mixed with an adhesive liquid, which is then brushed onto the tape's surface. This makes for a strong bond that will withstand the rigors of repeated editing passes. In ME (metal evaporated) tape, the manufacturers heat the metal until it evaporates into the surface of the tape. The larger number and smaller size of the bits of metal on this kind of tape allow for better contrast and color recording, but the tiny particles will have a greater tendency to fall off the tape during editing than will those of the MP variety.
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