Visual effects

Visual effects , or after effects is the term given for editing or adding effects to a image or video. You can use after effects to change different features of your work. For example you can play around with the lighting or colours. You can also add different elements such as fog, more lighting.

 Visual effects are also used to add animation into live action shots, or for creating settings using methods such as green screening. This is called compositing. These effects are commonly used in TV and film. 

Although after effects are done in the post production stage, they should be kept in mind during the production stage especially for timing. 

Example of before and after visual effects:

Rendering

The term Rendering is used to describe the process of creating a image from a 3d scene.

there are two different types of rendering - Biased and Unbiased.

Biased rendering is where you can control the render settings yourself e.g you can change the light or specularity of the image.

Unbiased Rendering is where you do not have the option to change the settings. this method of rendering usually produces much more realistic images as the rendering engine calculates every last little detail.

Example of a image rendered using a Biased engine

Example of a image rendered using a unbiased engine