rmalarz wrote:
We have a set of weights that go on the left side of the balance, and only on the left side. These weights are labeled ISO. They are in values of 50, 100, 200, 400, 800, 1600, etc. Weights for the other side of the scale are labeled f/1.4, f/2.8, f/3.5, f/4.6, f/5.6, etc. and 1, 1/2, 1/4, 1/8, etc. The weights on this side are designed to be used together in some combination.
--Bob
Good Stuff Bob.
Looking at this snippet in a simplistic way and thinking how I can understand it like a novice without the use of a camera. I look out my window on a bright sunny day. The snow covered ground is way too bright for me to look at through wide open eyes, so I squint a little bit, maybe an f8. Even that gets to be a little bright, so I don't look at the scenery for too long, maybe a second or two(ISO). A quick experiment would be to close your eyes for about a minute. While your eyes are closed pointed toward the window, open your eyes about half way for about 30 seconds and then close them. The afterimage you experience is an example what the sensor picks up on the camera. Of course the longer you keep looking and the wider your eyes are will determine how long you see the afterimage.