by Ark » Sun Feb 06, 2011 11:55 pm
The preview window, by default, shows you what your animation will look like, but not the actual size of the animation you can render. The preview window, in draft mode, will stretch to fill the area given, making it smaller or larger as needed. If you change to Proof mode, it will display the actual size that you have set in the Timeline Options window, using empty space or scrollbars around the edges as needed.
Zooming in and out of the pictures in the picture windows does not resize them, it simply lets you view them in more or less detail to place dots more precisely.
Your pictures are stretched to fill the area you have set by for the animation in the Timeline Options window.