What's a Gusline?
Hal's middle name is August, or Gus for short. Line is a suffix often found in words like phoneline, hotline, deadline, waistline, partyline, baconline, tofurkeyline, and Chevrolet.
How does a camera work?
Film is sensitive to light. A camera regulates the film's exposure to light by controlling the amount of light (via the aperture) and the length of time the light hits the film (via the shutter speed). A lens mounted on the front of the camera controls the angle of the light which dictates the magnification and the focus.
What IS that thing?!?!
Man, it beats the crap out of me!