Dfx User Guide - Tiffen.com

adjustments will affect only those white areas. If you want to change the default
areas defined by the shadows, midtones and highlights, you would use the
Position and Range sliders.
Original Shadows Midtones Highlights
Color Correctors 277
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Position
The Position slider pinpoints the values to be considered as shadows,
midtones, or highlights. A low Position value uses the darkest image values,
while a high Position value uses the brightest.
Range
Increases or decreases the range of values considered as shadows, midtones
or highlights. A low Range value indicates a narrow range of values, while a
high Range value indicates a large range of values.
Go to the Selection section of Common Filter Controls on page 254 to see how
the Position and Range controls work.
Color Correct
Hue
Rotates the hue of the image.
Saturation
Adjusts the saturation of the image. Positive values saturate, negative values
desaturate.
Brightness
Adjusts the brightness of the image. Positive values brighten, negative values
darken.
Dfx User Guide
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