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Day-For-
Night
Day-for-night photography is an
effect that makes a scene recorded
in daylight to appear as if it were at
twilight. This is usually
accomplished by the use of a filter
that both underexposes by about
two stops, and can also produce a
bluish color overcast. Lighting,
contrast, and other factors
contribute to the reality of this
effect. Tiffen offers the
Cool DFN filter, which is a lavender-
blue color traditionally associated
with dusk or twilight emulation with
day-for-night effects. The Tiffen
Monochromatic DFN filter is a bright
yellow-green, almost the color
complement (opposite) of the Cool
DFN. When you use this, and
perform the necessary color-
correction in post processing, you
will not have all of the original colors
available, producing a more realistic
monochromatic effect that simulates
actual silvery moonlight. Choice of
which one to use is a matter of
opinion. Both require an additional
underexposure by ½ to 1-1/2 stops
above not compensating for them in
the first place. Advance testing is
recommended.
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