---
title: "Curvature"
url: "https://help.maxon.net/c4d/en-us/Content/html/COM_REDSHIFT3D_REDSHIFT4C4D_NODES_CORE_CURVATURE.html"
section_path: "The Node Editor > Redshift Nodes > Redshift Texture Nodes > Curvature"
element_id: "COM_REDSHIFT3D_REDSHIFT4C4D_NODES_CORE_CURVATURE"
description: "This page describes the Curvature node of the Redshift renderer in Cinema 4D. It shades by convex or concave surface curvature — the classic mask source …"
---

# Curvature

> **Note:** **What is it about?**
>
> This page describes the **Curvature node** of the Redshift renderer in **Cinema 4D**. It shades by convex or concave surface curvature — the classic mask source for edge wear, dirt in cavities and procedural weathering.

This shader shades an object based on surface curvature. It features two modes: Convex and Concave.

|  |  |
| --- | --- |
| ![Image: Lambert Renderc2aa.png](https://help.maxon.net/c4d/en-us/Content/_REDSHIFT_/Resources/Images/Lambert%20Renderc2aa.png) | ![Image: Convex Curvature Render1722.png](https://help.maxon.net/c4d/en-us/Content/_REDSHIFT_/Resources/Images/Convex%20Curvature%20Render1722.png) |
| *Basic render of object* | *Curvature shader assigned to object* |