Basic rendering properties

To "render" something is to make a more presentable version of basic parts or instructions. In the case of 3D art it is the act of taking the models, textures, and scene objects you've created and/or arranged and instructing the computer to make a pretty, pretty image to show off.

Resolution / Aspect ratio

The "resolution" of your image describes the number of pixels present in both the width and height. The higher your resolution the larger your image then the more detail you can fit into it (and the longer it will probably take to render).

Splitting channels

Most 3D software packages will allow you to export your rendered images in separate passes. For instance instead of a single RGB image you might be able to render out an RGB image of your diffuse pass and another, greyscale, image of your shadows or illumination. Depending on your program the list of channels that can be created are quite numerous.

This is extremely useful because if you only want to slightly adjust an image it is often quicker to adjust the properties of a single channel than to re-render an entire image.

Motion tracking

Motion tracking implementations vary greatly between 3D packages.

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