>perspective
That's an interesting way to spell girl!
The long answer for you is because these pictures are designed to be viewed in virtual reality, the image is a 360 wrap around picture so when you are jerking off with your headset on no matter what direction you turn there is part of the image there, most of the action is in front of you, but you are actually in the environment should you want to look to the right or left. My humble recommendation is get a VR headset and never be bothered to look at normie porn again.