---
title: "Mask By Normals"
url: "https://help.maxon.net/zbp/en-us/Content/html/4_palettes_tool-7-masking-mask-by-normals.html"
section_path: "Palettes > Tool Palette > Masking > Mask By Normals"
description: "A set of parameters to mask polygons oriented away from the camera's line of sight toward the model."
---

# Mask By Normals

A set of parameters to mask polygons oriented away from the camera's line of sight toward the model.

![Image: 2024-4-tool-palette-geometry-masking-mask-by-normals-menu-header.png](https://help.maxon.net/zbp/en-us/Content/Resources/Images/2024-4-tool-palette-geometry-masking-mask-by-normals-menu-header.png)

## Mask By Normals

Applies a mask to all polygons oriented away from the camera's line of sight toward the model.

> **Note:** Mask By Normals operates in a single-use mode, meaning each tap creates a new mask based on the settings rather than layering masks with repeated usage.

## Blur Normals

Defines the blur applied to the masked polygons when pressing the Mask By Normals button.

## Normals Profile

Modify the profile curve to adjust the mask's appearance and tap Mask By Normals to apply the Normals Profile as a new mask.