| |
Yellow Gelatin Filters |
| 12 |
Deep Yellow. Minus-blue filter (see No. 32 for minus-green and No. 44A for
minus-red). Provides haze penetration in aerial photography. Cancels
blue light when exposing infrared-sensitive films. |
| 15 |
Deep
Yellow. Darkens sky in landscape photography more dramatically than No.
8 or 9. Useful for copying documents on yellowed paper. Greater blue
attenuation for infrared photography and for fluuorescence photograpy. |
| |
Orange
and Red KODAK WRATTEN Gelatin Filters |
| 25 |
Red
Tricolor. For color separation work and tricolor printing, used with No.
58 (green) and No. 47B (blue). Contrast effects in commercial and
outdoor black-and-white photography. Haze penetrationi aerial work.
Removes blue in infrared photography. |
| |
Miscellaneous Filters |
| 18A |
Visibly
opaque glass filter. Transmits only ultraviolet radiation between about
300 and 400 nm (e.g., 365 nm line of mercury spectrum) and infrared
radiation. Isolates UV for ultraviolet reflection photography. |
| 87, 87C |
Visibly
opaque filters absorb unwanted visible light in infrared photography. |
| 89B |
Visibly
opaque. For infrared photography, especially aerial. |
| 96 |
Neutral.
In color and black-and-white photography, reduces intensity of visible
light. Uniform attenuation throughout the visible spectrum. Greater
transmission in infrared. Available in 13 densities, covering the
transmittance range from 80 to 0.01. |
