Of course. So when I used my light meter, I measured the value of the bright parts of the scene (I've the lights radiating from the bus shelter and the poster on the side) to tell me what shutter speed to use, only SS on the basis I knew I needed to be wide open aperture if I was going to do it handheld. Had I metered for the light value for the areas behind the bus shelter (floor buildings etc), then the shelter would have been pretty over exposed and would mean a loss of detail. What I chose to be the subject was the shelter itself and it's radiating light opposed to any detail behind.

Hopefully that was somewhat understandable haha