>>2655843Let's see if I can explain this simply.
You can only achieve that narrow sliver of focus with a regular camera when things are very close to the camera. If you're taking a photo of something that's very close to the camera and you can get it all in the frame, it's going to be very small. As your subject gets bigger and you get further away, the depth of field increases until the far end reaches to infinity. So, at a certain distance and focus, far away stuff will always be in focus.
By tilting the plane of focus away from your subject and making it not parallel to the imaging plane (your film or sensor), you can create a very narrow sliver of focus for things that are very big or far away.
Since your brain is so accustomed to seeing that little sliver of focus only for things that are close to you, it makes big things look small.
