Rendering in Free Sizes　【Tutorial Movie】

Create a data to render.

Select the Document Set up... from the File menu.
As an alternative, click on the bottom-most downward-pointing arrow in the left-hand toolbar.

The Document Setup dialog appears. Enter any values in the Document Resolution.

The working window is setted up in the specified size.

Click on the center Render button to render.

The rendering is made in the specified size.