This is just the lens from our our aerial film camera. The camera was a Wild RC-30 (pronounced Vildt) that cost just $495,000. The lens alone is 150 pounds. The film was 10 inches wide, and 500 feet long. It shot a 10x10 frame of film.
It was 150 MM (6 inch) focal length yet it covered the entire 10x10 frame. We had to send the lens and the camera to USGS every three years and spend 20 grand to have it calibrated to do work for the DOT of any state.
The camera and the lens combination was almost 400 pounds.
No it is a door stop for someone.