Exposure adjustment method – Canon EE28 User Manual
Page 32
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3. Exposure Adjustment Method
Divide the film speed of the film being
used by the exposure factor of the filter.
Reset the film speed to the numerical value
thus obtained.
Film_Speed _Film Speed when
Using Filter
Exposure Factor
For example, when a Y3 filter with an
exposure factor of 2 attached to a camera
using ASA 100 film, then it is
=50.
In other words, the film speed should be
reset to ASA 50
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