Why my object will torsion at the edge of window?

[Wreewan_Morhee]

first picture is the angle look directly, looks good looks fine
second is turn right
and I found that when I turn right, my object will torsion at the edge of window, and more turn right, more torsion
Any one knows what cause this happen ?

[mjurczyk]

Perspective ?

Try lowering the FOV parameter on your camera to adjust strength of the perspective around the edges.

[Wreewan_Morhee]

Yes
change fov will solve this problem

thank u sir