Channel effects are used to manipulate the channels in a layer, such as RGB or luminance.
Channel Blur
Blurs channels individually. Useful for creating the impression of chromatic aberration.
Radius
- Radius Red: Sets the radius of the blur on the red channel. A higher radius creates a bigger blur.
- Radius Green: Sets the radius of the blur on the green channel. A higher radius creates a bigger blur.
- Radius Blue: Sets the radius of the blur on the blue channel. A higher radius creates a bigger blur.
- Radius Alpha: Sets the radius of the blur on the alpha channel, which determines the transparency of the image. A higher radius creates a bigger blur.
Dimension
- Dimension Red: Select whether the red channel blur is Horizontal, Vertical, or both Horizontal and Vertical.
- Dimension Green: Select whether the green channel blur is Horizontal, Vertical, or both Horizontal and Vertical.
- Dimension Blue: Select whether the blue channel blur is Horizontal, Vertical, or both Horizontal and Vertical.
- Dimension Alpha: Select whether the alpha channel blur is Horizontal, Vertical, or both Horizontal and Vertical.
Channel Mixer
Used to mix the color channels together. The red channel can have some of the blue channel introduced to it, for example. This can be useful for adjusting the color balance in a natural way, since the adjustments are based on another color channel from the source image.
The channel mixer is an effective option for creating a black and white image with extensive control over the contrast. Setting all values to zero, and then increasing the Red value in each color channel to 1.0, for example, will give you a black & white image of only the red channel. The same technique can be used with the green or blue channels as well.
Red
- Red: Sets the amount of the source red channel that is used to create the red output of your image. The default value of 1.0 delivers the red channel in its original state.
- Green: Sets the amount of the source green channel that is used to create the red output. This is set to 0.0 by default. Decreasing this value will darken the red output, based on the contrast contained in the green channel. Increasing the value will brighten the red output, based on the contrast of the green channel.
- Blue: Sets the amount of the source blue channel that is used to create the red output. This is set to 0.0 by default. Decreasing this value will darken the red output, based on the contrast contained in the blue channel. Increasing the value will brighten the red output, based on the contrast of the blue channel.
- Const: Controls the base value of the red channel. This value is calculated after the three channels above are mixed, and increases or decreases the total output of the red channel, based on the sum of the three channels above.
Green
- Red: Sets the amount of the source red channel that is used to create the green output of your image. This is set to 0.0 by default. Decreasing this value will darken the green output, based on the contrast contained in the red channel. Increasing the value will brighten the green output, based on the contrast of the red channel.
- Green: Sets the amount of the source green channel that is used to create the green output of your image. The default value of 1.0 delivers the green channel in its original state.
- Blue: Sets the amount of the source blue channel that is used to create the green output. This is set to 0.0 by default. Decreasing this value will darken the green output, based on the contrast contained in the blue channel. Increasing the value will brighten the green output, based on the contrast of the blue channel.
- Const: Controls the base value of the green channel. This value is calculated after the three channels above are mixed, and increases or decreases the total output of the red channel, based on the sum of the three channels above.
Blue
- Red: Sets the amount of the source red channel that is used to create the blue output of your image. This is set to 0.0 by default. Decreasing this value will darken the blue output, based on the contrast contained in the red channel. Increasing the value will brighten the blue output, based on the contrast of the red channel.
- Green: Sets the amount of the source green channel that is used to create the blue output. This is set to 0.0 by default. Decreasing this value will darken the blue output, based on the contrast contained in the green channel. Increasing the value will brighten the blue output, based on the contrast of the green channel.
- Blue: Sets the amount of the source blue channel that is used to create the blue output of your image. The default value of 1.0 delivers the blue channel in its original state.
- Const: Controls the base value of the blue channel. This value is calculated after the three channels above are mixed, and increases or decreases the total output of the blue channel, based on the sum of the three channels above.
Channel Swapper
Replaces channels with other channels. For example, you can have a layer’s alpha (transparency) set to correspond to its red values, or its saturation. This is useful for both color grading and compositing. Channel swapping is also frequently used in Infrared (IR) photography.
- Take Red From: Select the source channel that will be used to generate the red output.
- Take Green From: Select the source channel that will be used to generate the green output.
- Take Blue From: Select the source channel that will be used to generate the blue output.
- Take Alpha From: Select the source channel that will be used to generate the alpha output.
Channel Time Shift
Moves red, green and blue channels backwards or forwards in time individually. This creates a trailing effect on moving objects, or can create a chromatic aberration style distortion.
- Red Shift: Sets the number of frames by which the red channel is shifted from the current frame number. Positive values will take frames from later in the clip, while negative values will take frames from earlier in the clip.
- Green Shift: Sets the number of frames by which the green channel is shifted from the current frame number. Positive values will take frames from later in the clip, while negative values will take frames from earlier in the clip.
- Blue Shift: Sets the number of frames by which the blue channel is shifted from the current frame number. Positive values will take frames from later in the clip, while negative values will take frames from earlier in the clip.
- Alpha: Selects the frame that will be used for the alpha channel. By default it uses the Current Frame. Average will calculate the average of the values of all three color channels, and use that frame. Red Shift, Green Shift and Blue Shift will take the value from the selected channel, and use that frame as the alpha. The alpha setting applies when you are working with a layer that included alpha transparency. On standard video, the alpha setting will have no effect, since the entire frame is completely opaque.
Color Space Converter
Changes the color space of the layer to a different color space. Useful for color grading and compositing.
- From: Select the source channel or color space from which the conversion will be calculated.
- To: Select the destination color space to which the source channel or color space will be converted.
- Invert: Toggling this option will invert the results of the conversion.
- Alpha: Controls how the alpha channel is handled. Normal will give the typical result based on the conversion options you have selected. Solid will override the conversion settings and create a solid alpha, so the layer remains entirely opaque.