'The Boulevard du Temple' by Louis Daguerre from 1838 is wildly considered the first photo of human beings.

I looked at this a while ago, at the time photos had to be long exposures, several minutes. So if someone was walking along the roady, they would 'blur' into the road. and it like the reason the two people weren't blurry was because one of the people was having their shoes shines by the other.

https://en.m.wikipedia.org/wiki/Daguerreotype

Maybe someone with more knowledge of photographic history can explain, but I thought early cameras required very long exposure time, and people had to stay perfectly still in order to capture a clear portrait of them.

If this is the case, then how does this photo appear to include people mid-stride? Or are they literally posing for this?