Film Terms: N
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ND Filter
An ND filter, or neutral density filter, is used to reduce the amount of light entering the camera. The ND filter gives cinematographers and photographers another method (in addition to the aperture, film speed, and shutter speed) of controlling the brightness of the image.
Negative
A film negative is created when the exposed film undergoes a chemical process to produce images that are color- and light-inverted. These film negatives are later reversed to produce positives that can be projected in theaters or transferred to digital files.
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