Frequency response varies with load, and varies by 0.1 dB between between a 2Ω load and no load.
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Optical frequency response
A scanner's capability for capturing a given frequency or range of frequencies.
Visual frequency response 10-3. With normal persistence of vision, the "after image" lasts approxi- mately what length of time? 1. 1/2 2. 1/4 3. 1/10 4. 1/50 10-4. Each picture area on a strip of motion-picture film is referred to by what term? 1.
Personally, the only graph I really find useful is the first one - the frequency response graph.
modulated transfer function (MTF)
a test that measures the optical frequency response of a scanner or other optical system.
Variable area does have slightly less frequency response than variable density. In the 1970s and early 1980s, optical sound Super-8 mm copies were produced mainly for airline in-flight movies.
 See also: Frequency, Function, Stand, Digital, Time
  
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