Levels node

Left Toolbar > Adjust icon Adjust Nodes > Levels icon Levels

The Levels node allows you to adjust the color range of the channels of an image by setting the dark tones, mid tones and light tones of the input range, and the light and dark tones of the output range.

The Levels node adjusts individual channels or groups of channels of the image depending on the image color mode.

input
In0 Img

output
Out Img
The Value and the Red channels of the input image were modified.

Procedure

To adjust an image using levels:

  1. On the left toolbar choose Adjust Nodes > Adjust icon > Levels. Levels icon

  2. Drag the Levels icon into the Node Graph.

    Levels node

  3. Connect the output of an image node into the Img input in the Levels node.

  4. Set the attributes of the node to modify the output image.

Inputs

Img
The image to be adjusted.

Outputs

Img
The adjusted image.

Attributes Panel

Levels attributes

Blend Mode

The adjusted image is blended with the input image to provide additinal options.

Blend Mode
The blending mode.

Opacity
The opacity of the blending.

Channels

Channel
Defines the channel (or channel group) that will be edited by the level sliders. Changing the channel combo box loads the level values for the selected channel. Updates the levels values and histogram.

Reset
Resets the current channel.

Reset all
Resets all channels.

Input Levels

Histogram
Shows the histogram of the current channel.

Dark
Sets the dark input level. (0,0)

Mid
Sets the input level for the mid tones. (0.5)

Light
Sets the input level for the hight tones. (1.0)

Output Levels

Low
Sets the low output level. (0.0)

High
Sets the hight output level. (1.0)