Calculations

The Calculations effect combines channels of one layer with the channels of a second layer.

calculations-straight
Original Image 1 – From Unsplash.com
calculations-secondlayer
Original Image 2 – From Unsplash.com

Input Channel: The channel to extract and use as input to the blending operation. RGBA displays all channels normally. Gray converts all color channel values for a pixel to the luminance value of the original pixel. Red, Green, or Blue converts all color channel values for a pixel to the value of the selected color channel for the original pixel. Alpha converts all channels to the value of the alpha channel for the original pixel.

Invert Input: Inverts the layer (subtracts each channel value from 1.0) before the effect extracts the specified channel information.

Second Layer: The control layer with which Calculations blends the original layer.

Second Layer Channel: The channel to be blended with the input channels.

Second Layer Opacity: The opacity of the second layer. Use a setting of 0% for the second layer to have no influence on the output.

Invert Second Layer: Inverts the second layer (subtracts each channel value from 1.0) before the effect extracts the specified channel information.

calculations-rgba50-overlay-invert1-2
Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Overlay, Invert Second Layer: Yes
calculations-rgba50-overlay-invert1
Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Overlay, Invert First Layer: Yes, Invert Second Layer: No

Stretch Second Layer To Fit: Stretches the second layer to the dimensions of the original layer before blending. Deselect to center the second layer on the original layer.

Preserve Transparency: Ensures that the alpha channel of the original layer isn’t modified.

Blending Mode: The method that is used to blend the two images together.

calculations-rgb50-saturation
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Saturation
calculations-rgba50-add
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Add
calculations-rgba50-classiccolorburn
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Classic Color Burn
calculations-rgba50-classiccolordodge
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Classic Color Dodge
calculations-rgba50-classicdifference
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Classic Difference
calculations-rgba50-color
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Color
calculations-rgba50-colorburn
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Color Burn
calculations-rgba50-colordodge
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Color Dodge
calculations-rgba50-darken
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Darken
calculations-rgba50-difference
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Difference
calculations-rgba50-exclusion
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Exclusion
calculations-rgba50-hardlight
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Hard Light
calculations-rgba50-hue
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Hue
calculations-rgba50-lighten
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Lighten
calculations-rgba50-linearlight
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Linear Light
calculations-rgba50-luminosity
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Luminosity
calculations-rgba50-multiply
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Multiply
calculations-rgba50-normal
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Normal
calculations-rgba50-overlay
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Orverlay
calculations-rgba50-pinlight
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Pin Light
calculations-rgba50-screen
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Screen
calculations-rgba50-softlight
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Soft Light
calculations-rgba50-vividlight
Input Channels: RGBA, Second Layer Opacity: 50%, Blend Mode: Vivid Light
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