The very first photo of a person was taken in 1838 by Louis Daguerre.
The photographic process was called Daguerreotype which involved exposing a metal plate which was chemically treated to capture an image. Because the process took 10 minutes of exposure, people were very difficult to photograph, unless they remained still for the whole process.
Photo taken in France
Boulevard du Temple 1838
The person can be seen in the lower left area, getting their shoes shined