Lens Distortion

Table Of Contents

 

Introduction

The "Lens Distortion" lens shader allows the rendered image to be distorted via a "UV Map" image.

Due to their lens geometry, real-life cameras tend to distort the captured images. If the user needs to add CG elements to real-life (distorted) camera footage, the CG elements will also have to be distorted.

UV Maps can be generated in programs like Nuke and have the characteristic green/red gradient look.


An example UV Map


How To Use

You can enable lens distortion via the "Redshift Lens Distortion" lens shader as shown below.



Once the Lens Distortion lens shader is created, all you have to do is set the distortion image (UV Map) and render.


Lens Distortion Examples

Below are several examples of different lens distortions, each with their appropriate UV distortion maps and an example output image.


Neutral UV Distortion Image UV Grid Result Image Result


UV Distortion Image UV Grid Result Image Result


UV Distortion Image UV Grid Result Image Result


UV Distortion Image UV Grid Result Image Result