Stronger than the 18A, this filter is used primarily as a warming
filter. It decreases the color temperature of a scene (makes more red),
reducing the bluish cast on overcast days or at high noon. The 81 series filters
can be used together to increase effects. This is a good filter for warming up skin tones
in portraits and scenery.
Filter Factor: 1.4 or 1/2 stop
Stronger than the 18A, this filter is used primarily as a warming
filter. It decreases the color temperature of a scene (makes more red),
reducing the bluish cast on overcast days or at high noon. The 81 series filters
can be used together to increase effects. This is a good filter for warming up skin tones
in portraits and scenery.
Filter Factor: 1.4 or 1/2 stop