IsDesignTimeInfoIconShown specifies if Camera info icon is visible in design time. The info icon shows which type of camera is used. With the icon user can click on the icon in designer to select the camera in XAML.
The icon is never visible in run-time.
Setting IsDesignTimeInfoIconShown to false can be useful for custom controls that internally use Ab3d.Camera and where the camera icon would mess the design time rendering of the control.