To have multiple background images press the Add Image button for each one of the images and views you want to use.
By default images show in all views, but you can assign them to specific views, using the option for Axis:
Here's an example of different images used for different views:
(clik on the image to enlarge)
Note: Background images can only be displayed in:
Camera Perspective view (Numpad 0)
Any of the preset orthographic views which you can access using the keys on the number pad:
- Front/Back (Numpad 1 or CtrlNumpad 1)
- Right /Left (Numpad 3 or CtrlNumpad 3)
- Top/Bottom (Numpad 7 or CtrlNumpad 7)
Background images will not show in perspective view. To switch between perspective and [orthographic][3]orthographic view use Numpad 5
Background images are used for reference only and will not be part of the final render.


