Filters
FiltersF ilters
Filters
Type Effectiveness of Filters
TU
UV
Absorbs only ultra-violet rays. Especially effect-
tive at seaside, and on high mountains. Recom-
mended for use in color photography.
T
Y1
Y3
Increases contrast of black and white film. En-
hances clouds, darkens the blue sky. Brightens
red and yellow.
T
O1
Darkens blue, lightens yellow and red percep-
tibly. Good for contrasts especially in distant
landscapes.
T
R1
Makes strong contrasts. May also be used with
infrared film.
T
G1
Prevents red from turning radically into white.
Lightens sky and face appropriately, and reflects
the lightness of fresh greenery.
TU
ND4 ND8
ND4 reduces light values by 1/4, ND8 by 1/8.
No effect on the reproduction of colors.
U
SKYLIGHT
Acts to harmonize the blue sky and shade.
U
CCA4
For use with daylight type film under cloudy
conditions.
U
CCA8
For use with tungsten type film in the
morning sun or sunset.
U
CCA(12)
For use with tungsten type film under sunlight.
U
CCB4
For use with daylight type film in the morning
sun or sunset.
U
CCB8
For use with daylight type film and clear flash
bulb.
U
CCB(12)
For use with daylight type film under tungsten
light.
T
For black and white film.
U
For color film.
Various types of filters, for different
lens thread diameters, are available for
special effects in both color and
black-and-white photographs. The
through-the-lens exposure measure-
ment system of Canon F-1 does not
require exposure factor compensation
for filters.
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