The question about people moving in and out a scene is interesting when discussing Atget, because he seems not to bother if they are in or out or partially in or out. It seems that precise timing for him is completely excluded from his artistic practise.
hi clive
he was using dry plates at wee hours of the morning, there wasn't an enourmous amount of light ( and he needed a lot of time )
so if people moved in and out of his frame i am sure he shrugged seeing the photographs were about
the sculptural and non-ephemeral quality of the architcture he documented.
( i've photographed with paper or glass at similar times as he did low iso, high fstop is MINUTES, not seconds. and
a moving person or car or cart or animal or ... after 1second no longer exists, unless it is perpetually in the same spot )
as mentioned, he DID photograph people
he made portraits of (the little professions) "les petits métier" ( ragman &c ) who had carts &c and photographed them in
broad daylight as if THEY were bronze sculpture or buildings. he did the same thing for the homeless.
it must have been kind of interesting to be there, this little old man who looked like one of the old things he was photographing
lugging around a camera and tripod as big as him.
I would be very interested in reading more about this, any link or resource?
here's something, but i've read things more
authentic .. someone must have moved the articles
https://www.wired.com/2009/06/weegee/