We used a unique setup for this shot to get the camera up higher, and somewhat over traffic, but yet still stable enough to allow for along exposure of the traffic below. The camera was lifted up on a c-stand about 10ft high with a weighted cross bar extending about 3ft over the road. This allowed us to stay on the sidewalk, but get the camera out just a bit to see down towards Union Station. I did have to assist watch for buses though because we weren't high-enough to avoid potentially clipping them.
See below for some in use examples of this images and some of our others for Aimco Real Estate.
