People
I’m not much of a portrait or people photographer, but sometimes, I have a go. Real portrait photographers excel in studio photography using careful lighting procedures to create subtle and often dramatic nuances in their subjects.
It should always be remembered that some people do not want their photo taken and it takes a level of “brass neckedness” to just carry on photographing. Not really in my nature.
Studio photographers of people usually use a short telephoto lens so that they are not so close to intimidate their subject. When I was asked to do some portrait photography I would often put a used roll of film in my camera and click away to the end of the film until they got relaxed.
Nowadays, with so many ‘phone cameras, people are less self conscious.