I had the pleasure of seeing 230 prints of his work at an exhibition earlier this year in Paris at Musee Carnavalet - (link)
I visited during the week so it wasn't busy - with only 3 other people in the rooms I had time to really look at the work and spent the afternoon there.
The Carnavalet was one of Atget's main clients and bought a lot of his prints and these were originals.
For me the beauty of Atget's work is about the coming together of place and time, process and equipment.
I also think with his work mainly done to produce documentary/ record shots for artists and architects there was no pretensions to 'fine art' and such like.
At the same exhibition was the work of one of Atget's contemporaries - Emmanuel Pottier - who produced similar type of work.