It makes perfect sense to me that "from any given point in space there can be only one perspective. " But does not my lens change my perspective?
Hello again, Adeel.
The lens can never, ever change the perspective. It's a law chiseled into stone somewhere, or it should be. Only moving the location of the taking lens can do that.Perspective:
How things look from a single point in space.(The various points on the face of a fast wide open lens are arguably seeing from slightly different points in space, and thereby have slight variations in perspective, but for all practical purposes a lens may be thought of as a single point in space, not a group of closely located points.)
A short focal length lens can provide a wider angle of view. A telephoto can provide a narrower angle of the same view as that which was seen by the wide angle lens. Only by moving the lens from one point in space to another can we change the perspective
This is why the cropped image looks as though it had been shot with a longer lens.