hi ,
when i render my scenes using mantra , i get a black baground colour . How do i change the default colour to make it look like there is only one colour and is infinte ..no horizon line !

thanks

Not sure you can change the black colour for a mantra rendering. However, you can put an image in the camera's view … on the camera goto the View tab and put the filepath in the Background Image field. Make sure to toggle on the ‘Enable Background Image’ widget.

grid on the xy plane with a constant shader?