I am looking for a way to accurately place a flat object, in my case a watch, into the lower right corner of my camera view so it is exactly orthogonal to the camera.
The camera is looking at the default cube from above at an angle. If I use the camera position and angle to position the watch, it is accurately orthogonal as long as it is placed in the center of the camera view. But I need it to sit in one of the corners.
How can I make orthogonal to the camera?