As an enthusiastic amateur photographer I'm a big fan of log_2 scales. Photography is full of them, most settings follow it and photographers call them "stops".

As an enthusiastic amateur photographer I'm a big fan of log_2 scales. Photography is full of them, most settings follow it and photographers call them "stops". One stop more is twice the light. People don't even think about logarithmic scales but it's very easy to intuit what going up and down the log_2 scales will result in. Good scale, I like it.