You can define a region of the SOLIDWORKS graphics area for preview or final rendering.
You can use the render region to evaluate lighting, appearances, and render
settings on one area of the model without changing the view orientation, zooming in
or out, or rendering the entire model. Smaller areas generate faster previews and
final renders.
If the preview window is open when you define a render region, only the area inside the render region updates when you make changes to the model.
SOLIDWORKS recommends that you use a camera view and set the Output Image Size to Use SOLIDWORKS View in PhotoView 360 Options. If you instead use a custom Output Image Size, the FeatureManager design tree covers part of the view. This makes it difficult to predict what part of the graphics area will be rendered and to set the location of the render region.
To define a render region: