Apple Color 1.5 - Manual (Page 304)

B&W
Desaturates the image to produce a monochrome image consisting of only the Luma
component. This is done using very specific math, adding together 0.299 of the red
channel, 0.587 of the green channel, and 0.114 of the blue channel to arrive at the final
monochrome result.
Bleach Bypass
Raises the contrast and desaturates the image. Simulates laboratory silver-retention
processes used to raise image contrast in film by skipping the bleaching stage of film
development, leaving exposed silver grains on the negative which boost contrast, increase
grain, and reduce saturation.
Blur
Blurs the image. Blur has one parameter:
• Spread: The amount of blur. Can be set to a value from 0 (no blur) to 40 (maximum
blur).
Clamp
Two parameters clip the minimum and maximum values in the image. Clamp has two
parameters:
• Min: The minimum level in the image. Any levels below this value are set to this value.
• Max: The maximum level in the image. Any levels above this value are set to this value.
Curve
A curve that affects image contrast similar to the Luma curve in the Primary In room.
Selecting this node displays a curve control in the Parameters tab that works identically
to those found in the Primary In room. Four buttons below let you choose which channel
the curve operates upon:
• Luma: Sets the curve to adjust the luma component of the image.
• Red: Sets the curve to adjust the red color channel of the image.
• Green: Sets the curve to adjust the green color channel of the image.
• Blue: Sets the curve to adjust the blue color channel of the image.
Duotone
Desaturates the image, mapping the black and white points of the image to two
user-customizable colors to create tinted images with dual tints from white to black.
Duotone has two parameters:
• Light Color: The color that the white point is mapped to.
• Dark Color: The color that the black point is mapped to.
304 Chapter 11 The Color FX Room