AdjustContrast - ComfyUI Built-in Node Documentation - ComfyUI

The Adjust Contrast node modifies the contrast level of an input image. It works by adjusting the difference between the light and dark areas of the image. A factor of 1.0 leaves the image unchanged, values below 1.0 reduce contrast, and values above 1.0 increase it.

Inputs

Parameter	Description	Data Type	Required	Range
`image`	The input image to have its contrast adjusted.	IMAGE	Yes	-
`factor`	Contrast factor. 1.0 = no change, <1.0 = less contrast, >1.0 = more contrast. (default: 1.0)	FLOAT	No	0.0 - 2.0

Outputs

Output Name	Description	Data Type
`image`	The resulting image with adjusted contrast. Pixel values are clamped to the 0.0–1.0 range.	IMAGE

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