---
title: Zero Density
slug: ncam-reality/zero-density
createdAt: 2021-08-31T03:23:41.000Z
---

## Protocol

Currently FreeD via a UDP connection is the supported protocol when working with Ncam Reality and Zero Density

## Lens Distortion

Because the FreeD protocol is not able to transmit lens parameters, all lens calibration must be conducted within the Zero Density software

## Encoder Ranges

When configuring the Ncam tracking data within the Zero Density software, use the following encoder values for the zoom and focus encoder mapping:

- **Zoom Min Constant** - 524900
- **Zoom Max Constan**t - 1580000
- **Focus Min Constant** - 524900
- **Focus Max Constant** - 1580000

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