We have years of experience creating high quality photo- realistic video's and still images rendered with V-Ray in 3D Studio Max. Offline rendering is the process of generating an image or video from a model by means of computer software. The rendering takes place entirely in the CPU, this has the main advantage that it is not restricted to the (limited) capabilities of graphics hardware, but the disadvantage that it's more time consuming and changes cannot be made " on the fly".
Rendering can be split into two main categories: Real-time rendering (also known as online rendering), and pre-rendering (also called offline rendering). Real-time rendering is used to interactively render a scene, like in 3D computer games, and generally each frame must be rendered in a few miliseconds.
Offline rendering is used to create realistic images and movies, where each frame can take hours or days to complete for it's higher quality.