Before cell phones, I used to use a Nikon SLR, and I bought a 200mm telephoto zoom lens for it. This did two things:

1) I could sit in a corner at a wedding or activity, and just quietly take photos without botherin' anybody much... use the lens to "get close"

2) If you get about ten inches from a person's face, the photo will make their nose as big as an apple, because their nose is 8 inches away and their eyes 10, their ears 14 so the nose will appear almost 2X too large. If you get back 30 or 50 feet with a telephoto lens, they look SO much better because they are all 50 feet away +/- 3 inches, which is 1/2 percent.

With these cell phones now, you can be 50 feet away and zoom in electronically