Hi...
By default CTA uses a realistic perspective camera.
So just as in the real world when you look at at a somebody or something over to your left or right, the perspective will look different than when straight in front of you. An example of this is looking at a brick. Straight on it will appear perfectly rectangle, but over to the left or right the nearest side of the brick will appear longer than the far side.
However, if you don't like this look then you can turn it off in Project Settings (CTRL+SHIFT+P) or by pressing O. This will turn the view into a flat Orthographic view with no perspective.
Peter
Forum Administrator
www.reallusion.com