It was a 50mm lens and probably 100asa. As for shooting at the right location, due to the crowded alleys and other obstructions, this was the ONLY place to shoot. Even then I still had to remove dumpsters, parked cars, and other crap blocking the view of the lower portion. I even revisited it once to make sure I was filling in some sections correctly. Currently, the building is a wreck as its deep in remodeling. As soon as its completed, Ill shot an update. I was luck enough to catch it as it was for all those 111 years just before they began the construction.