---
title: "Vector Bias"
url: "https://help.maxon.net/c4d/en-us/Content/html/COM_REDSHIFT3D_REDSHIFT4C4D_NODES_CORE_RSMATHBIASVECTOR.html"
section_path: "The Node Editor > Redshift Nodes > Redshift Math Nodes > Math Vector Nodes > Vector Bias"
element_id: "COM_REDSHIFT3D_REDSHIFT4C4D_NODES_CORE_RSMATHBIASVECTOR"
description: "This page describes the Vector Bias node of the Redshift renderer in Cinema 4D. It biases each vector component along the Perlin curve using its matching …"
---

# Vector Bias

> **Note:** **What is it about?**
>
> This page describes the **Vector Bias node** of the Redshift renderer in **Cinema 4D**. It biases each vector component along the Perlin curve using its matching bias component — per-axis mid-tone shaping for vector data.

Returns a curved bias of *Input* by *Bias*, using the following Ken Perlin formula: pow(*Input*, log(*Bias*)/log(0.5))\
*Bias* components should be in the range between 0.0 and 1.0

Every *Input* vector component is using the matching component of the *Bias* vector to finally result in the output vector.

This function will lead to a reduction of the color component values that have a mid-range brightness, especially if set to values of less than 0.5. *Bias* values greater than 0.5 will brighten the color component values with mid-range intensity correspondingly. Color components that are already very dark or bright will be less affected. A *Bias* value of 0.5 will result in no changes to the colors that are input.