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Chapter 16. Your Next Steps: Efficiency ... > Why Is It Taking So Long to Render?

Why Is It Taking So Long to Render?

By now, you've learned that rendering times are hard to predict. After you finish creating an animated scene and set Maya to render a series of frames, it's nearly always a few minutes or hours before the job is done. The scene's complexity is linked to the render time, so scenes with thousands of objects and dozens of lights are slower to render than those with fewer objects and lights. Even simple scenes can sometimes take longer than you might expect, however. What are you supposed to make of it when you come back a day later and only a few frames of a seemingly simple scene have been rendered? Something is obviously putting a heavy burden on the renderer. The following sections cover a few areas to consider as potentially expensive in terms of computation.

Render Globals Settings

Resolution: Large images take longer to render than small images. If your 320×240 render took 10 minutes, you can usually count on a 640×480 render taking 40 minutes because the image has four times the number of pixels. Doubling the dimensions quadruples the pixel space and the rendering time.


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