Color correction

The Color Correction effect allows you to adjust various color properties of your image to achieve the desired look. It provides a comprehensive set of controls for fine-tuning the colors, brightness, contrast, and more. It is one of the most useful effects on Vizzy

How it works

Color Correction works by applying a series of adjustments to the pixel colors of your image. You can modify properties like hue, brightness, contrast, vibrance, and saturation, as well as control individual color channels. The effect also allows you to invert colors, adjust shadows and highlights, and perform color channel-specific adjustments.

Use cases

Color Correction is particularly effective for:

• Matching colors between different parts of your composition
• Creating specific color effects or moods
• General creative visual design

Controllers

General Controls

Name	Type	Description	Range
Brightness	Number	Adjusts the brightness of the image	0-2
Contrast	Number	Adjusts the contrast of the image	0-2
Hue rotation	Number	Shifts the colors	0-360
Vibrance	Number	Enhances or decreases the vibrance of the colors	-10-10
Saturation	Number	Adjusts the saturation of the colors	0-10
Shadows	Number	Brightens the darker parts of the image	0-10
Highlights	Number	Brightens the brighter parts of the image	0-1
Invert	Boolean	Inverts the colors of the image	-

Red Channel Controls

Name	Type	Description	Range
Add	Number	Adds a value to the red channel	-1-1
Multiply	Number	Multiplies the red channel by a value	0-10

Green Channel Controls

Name	Type	Description	Range
Add	Number	Adds a value to the green channel	-1-1
Multiply	Number	Multiplies the green channel by a value	0-10

Blue Channel Controls

Name	Type	Description	Range
Add	Number	Adds a value to the blue channel	-1-1
Multiply	Number	Multiplies the blue channel by a value	0-10

Order of Operations

The Color Correction effect processes colors in a specific order defined below. If you need a different order, you can always add more instances of the effect in the effect chain.

1. Channel-specific changes:

   • Each color channel (Red, Green and Blue) is first adjusted by adding and multiplying the specified values.
     • Add: This control shifts the color values up or down, effectively brightening or darkening the specific channel. As a result, the very edges of the image might become visible if it is transparent and has a glow.
     • Multiply: This control scales the color values, intensifying or reducing the specific channel’s effect. In principle, it is also similar to an increase in brightness.

2. Brightness adjustment:

   • The overall brightness of the image is adjusted by adding the brightness value to the color values.

3. Contrast adjustment:

   • The contrast is adjusted by scaling the color values around the midpoint (0.5).

4. Hue rotation:

   • The hue of the colors is shifted based on the specified hue rotation value.

Hue precision

Hue rotation is not a lossless operation. Some color precision might be lost in the process!

5. Vibrance adjustment:

   • The vibrance is adjusted to enhance the intensity of the colors while preventing clipping.

6. Saturation adjustment:

   • The saturation of the colors is adjusted to increase or decrease the intensity of the colors, without preventing clipping. This means that you can make something like very “deep-fried”.

7. Shadows and highlights Adjustment:

   • The shadows and highlights are adjusted to brighten the darker and lighter parts of the image, respectively.

8. Color inversion:

   • If enabled, the colors are inverted, creating a “film negative” effect.