# Chromatic Aberrations

Chromatic aberration also makes the image on the screen cinematic. This post process creates an established image of the lens in our brain. Seeing this image, we understand that we are now looking through the camera.

Chromatic aberration is related to the color effect that occurs on the edges of the lenses. The lens has a non-uniform thickness. Therefore, light travels different distances through the lens (in the medium) and exits in some places refracted at different frequencies. Different frequency means different wavelengths and different colors. As a result, colored edge effects (or rainbow effect) appear on the lenses.

Such effects can be noticed if you look through a camera or a telescope.

<figure><img src="/files/2PBZYhUumZFKmbriTYDq" alt=""><figcaption></figcaption></figure>

### Scale&#x20;

This post process has only one parameter - Scale. When you increase this parameter, the picture begins to blur and display in such a way that a rainbow appears at the edges of the image. This rainbow is a dispersion, which is called aberration.<br>

<figure><img src="/files/TUbbCZQiGc1dwL0ZuOM9" alt=""><figcaption></figcaption></figure>


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