By default, 3DTrueView™ images fill the view window they are created from. If you enabled the Render to File option, the image is also saved at that size. You can select another output size if you want.
To specify an output size for rendered images:
Select View
> 3DTrueView > 3DTrueView Options, or click the 3DTrueView
Options button on the 3DTrueView toolbar.
In the Program Settings dialog, select the Rendering tab.
In the Image Output area, select the desired size from the Size drop box. The default selection is Current View Size, which saves the image at the size currently shown on the screen. Pre-defined sizes include 640 x 480, 800 x 600, and 1024 x 768. Selecting the Custom option lets you define a custom size by entering values in the Width and Height edit boxes.
Click OK.