Time for action – rendering only a part of the frame

It's pretty easy to render only a part of the frame, shown as follows:

1. Get a camera view in the 3D View window.
2. Press Shift + B and use the marquee, like the standard border select, to choose a portion of the frame in the camera image area.
3. Then, press F12 to render it.
4. To return to rendering the entire window, press Shift + B and select the entire camera image area in the 3D View window. It will not change your camera settings if you select some of the passepartout area; you will just get the full camera image.

What just happened?

You learned to save time by only rendering a part of the frame. We covered earlier in this chapter that Shift + B allowed you to select part of a view to zoom into, using Shift + B in the Camera view lets you select a part of the whole frame to render. You can also use this trick to render animation with the Ctrl + F12 command.

Taking a glimpse of what the animation will look like with the quick render...