Why it matters.
Where you stand can change a picture as much as which lens you choose.
A closer look.
Changing your viewpoint changes spatial relationships. Lens choice changes framing and often leads you to choose a different working distance.
Photograph two objects from nearby, then farther away. Compare the foreground object with the background one.
Keep in mind.
When comparing lenses, record whether the camera position changed. Framing and viewpoint are separate choices.