---
title: "Bump Map"
url: "https://help.maxon.net/c4d/en-us/Content/html/NET_MAXON_RENDER_NODE_BUMP.html"
section_path: "The Node Editor > The individual Assets > Surface > Bump Map"
element_id: "NET_MAXON_RENDER_NODE_BUMP"
description: "This page describes the Bump Map node of the classic node materials in Cinema 4D. It converts textures into normal perturbation for fine relief — …"
---

# Bump Map

> **Note:** **What is it about?**
>
> This page describes the **Bump Map node** of the classic node materials in **Cinema 4D**. It converts textures into normal perturbation for fine relief — scratches, pores and grain without extra geometry.

![Image: 042533.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/042533.jpg)\
Comparable to the Normal Map effect, a bump map can also be used to affect the surface Normals and to simulate fine irregularities and structures of a surface. In the case of the bump map, however, only grayscale values can be evaluated, which in themselves cannot contain any information about the slope of a surface. These are derived from the input gradients at render time. A Normal map has advantages here, because it contains RGB values and can precisely define the direction of a given Normal.

> **Tip:** Note:
>
> This Node is only available when editing a classic Cinema 4D Node Material.

Manipulating the surface Normals changes the shading of the surface. Fine irregularities such as scratches, pores or, for example, a wood grain, can be simulated without having to change the geometry of the object. However, since this is only a shading effect, the shape of the geometry will not change in the process. By default, light areas appear raised on the surface, while dark areas appear deepened.