It can be used like the KR1.5 (Skylight) filter especially with films that tend to have a reddish tone inherent to their emulsion
Ideal for landscape photographs at noontime and for flash exposures on daylight reversal film when the light emitted by a compact flash unit has too high a color temperature
81 Series Conversion Factors
81A decreases color temperature from 3400 - 3200 Kelvin
81B decreases color temperature from 3500 - 3200 Kelvin
KR3 (81C) decreases color temperature from 3600 - 3200 Kelvin
KR6 (81EF) decreases color temperature from 3900 - 3200 Kelvin
Tipo
Conversão de cor
Tamanho
46mm
Gradação
81B
Fator de Filtro
1.2 (+0,5 ponto)
Multi-Coated
Not Applicable
Rotating
Not Applicable
Effect
Controls the bluish coloration that affects daylight film; it can also remove excessive blue from the effects of electronic flash
Aplicação
Ótimo para paisagens em geral, quando o fotógrafo deseja remover o tom azulado em sombras ao ar livre, ou apenas adicionar cores quentes à fotografia.
Color Temperature
81B decreases color temperature from 3500 - 3200 Kelvin