They might work in harsh or dangerous areas. Sometimes, photographers and camera operators wait a long time to take a picture. They wait in all kinds of weather for an event to take place. They have to stand or walk for a long time. They also have to carry heavy equipment.
Photographers often have to get their work done quickly.
They have to meet deadlines and please their clients. Most of them worked in and around large cities. More than 1 out of 2 were self-employed, a much higher proportion than the average for all occupations. Most photographers who work for someone else worked in a photography studio. Others worked for newspapers and magazines.