Flower vendor in rain, Paris 1951

This is Robert Frank's photograph, "Flower vendor in rain, Paris," and I’m wondering what kind of camera he used, because he sure made it sing. I'm sitting here thinking, 'what’s it like to be him, standing in the rain?' Paris looks like it's been sandblasted, but the flowers look like they just arrived. Did he buy one? Look how the rain is kind of like the blurriness. Is it moving, or is it still? Was he shooting quick, just grab and go? A lot of photographers work like that, you know, just a quick moment in time that just happens, and then it's gone. You know, painting is just the same; it is like a wrestling match. And then you gotta know when to stop!