One aspect of wide versus telephoto lenses is how large the background gets. As in “If you want a large moon, use a long lens”.
Huh? What do you mean, Michael?
I shall illustrate with a couple of shots I took of a student during a “Creative Urban Photography” outing the other day. One with a long lens, and one with a wide angle lens.
Ignore the light (I was using a flash with a warming gel on one camera, and no flash at all on the other), and look instead at the size of the blurred-out car in the background:
Here’s picture one:
Now look at picture two (where by moving my position I have kept the subject the same size):
See how that car magically grew much larger in the second picture?
Do I need to explain which picture was taken with a wide angle lens, and which one with a telephoto lens?
So now imagine the person is a tree and the car is the moon at night, or the setting sun. So what lens would I be most likely to use if I want a large moon or a large setting sun?