---
title: "Bias/Gain"
url: "https://help.maxon.net/c4d/en-us/Content/html/NET_MAXON_PATTERN_NODE_EFFECT_BIASGAIN.html"
section_path: "The Node Editor > The individual Assets > Color > Bias/Gain"
element_id: "NET_MAXON_PATTERN_NODE_EFFECT_BIASGAIN"
description: "This page covers the Bias/Gain node of the classic node materials in Cinema 4D. It shifts mid-tones (bias) and contrast around the middle (gain) per …"
---

# Bias/Gain

> **Note:** **What is it about?**
>
> This page covers the **Bias/Gain node** of the classic node materials in **Cinema 4D**. It shifts mid-tones (bias) and contrast around the middle (gain) per channel — classic Perlin curve shaping for textures and masks.

![Image: 042162.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/042162.jpg)\
The Bias and Gain functions can be used to brighten or darken specific colors whose brightness lies in the middle range or extreme range.

**Bias** and **Gain** re-calculate color values relative to the brightness of their colors.

The colors that are input are broken down into their red, green and blue parts and their intensity is set in relation to a value range between 0% and 100%.

From this, a re-calculation of the RGB values will take place.