As a professional San Francisco City Hall wedding photographer, we always come equipped with a full array of amazing lenses. Because of the historic architecture in the building, a Fish Eye lens can often be used to good advantage. This is what we did in this particular photo which provides a 180 degree vertical view. The super wide angle view allows us to even include the dome of city hall! I have always said that the skill and experience of your professional wedding photographer is more important than the equipment, but there are some lenses that come in handy at SF City Hall.