Light can be dark and dark can be light when you have a camera.

Last week’s class at Sheridan College:

The classroom was brightly lit. But without changing that, by using low ISO/fast shutter/high aperture number, I got this – remember, this was a bright room:

And then I turned the lights off. And now I chose slow shutter, high ISO, and open aperture (low number). Now I got this – remember, this was a very dark room:

Yeah, that is right, your camera is a light shifter, and don’t you ever forget it!