When trying to show an entire project to a client, you often use several rendered images, or an animated movie. Another option which works well for some models, is to create an interactive, 360 degree panoramic view. This can then be turned into a movie, or embedded with a view in a web page.
A Panoramic image is created by rotating the camera while rendering to create a full 360 x 360 degree image. It works best with large interiors, or with exteriors which have a central point which let you view the full model.
You can create Panoramic Views by check the make Panoramic View check box on the Render Setup Tab dialog.
Most software to process Panoramic Views requires that the aspect ratio be 2:1 (e.g. 2000 x 1000) pixels. So the rendering resolution will automatically be set to a ratio of 2 to 1.
You can view the flash movie made from the Panoramic image here: View Panoramic Image in Viewer