Why the ratio of the environment 2D pic is not right?

Iamcaobin

I loaded a 2D pic as reference in background in environment panel, the problem is the 2D pic ratio is not correct! the ratio of the 2D pic will following the viewport, please tell me how to make the 2D reference pic been fixing ratio?

Richard Haseltine

You would need to set the image size to match the desired ratio, and the render size to the same in Render Settings.