a little r’n'r

[12:27:56] Hayden says: My favorite analogy for exposure is filling a bucket of water. A bucket is of fixed size and needs a certain amount of water to fill it, just like film, which is of a set film speed and needs a certain amount of light to capture an image. To fill your bucket, you can pour a small stream of water for a long time or a fast stream of water for a short time. Either way, you end up with the same amount of water. In photography, the size of the stream of the water is analagous to the f/stop, the length of time you pour is analagous to the shutter speed, and the size of the bucket is analagous to the film speed. Broadly speaking, from the bucket’s point of view, it doesn’t matter which combination of stream size and length of time you choose as long as the right amount of water ends up coming in. Film is the same; within limits, it is indifferent to the combination of time and amount of light as long as the right amount of light eventually arrives.
[12:37:22] Hayden says: heh.  print it out, carefully cut out the circles, laminate them, and put
them together with one of those brass two-pronged rivetty things.  Voila!  It’s much more like my light meters of old
[12:37:32] Hayden says: geek or unique?

// He means freak or odd.