> "Gregg" <giverson@xxxxxxxxxxxxx> writes:
> Yes Lex,
>
> That is how I remember having to do it "once upon a time". Now a sliding
> scale is on the back of every flash I remember having looked at since I
> don't remember when (maybe late '60s). Maybe this is intuitive to me
> because I think visually and used to use a slide rule in school.
As a matter of fact, a circular slide rule makes a dandy flash
calculator if your flash doesn't have its own scale. For convenience,
you could mark the f-stops with a colored highlighter on the appropriate
scale. The "divide and conquer." Pocket protector is optional.
--Peter
Logarithm: A birth control method for Catholic lumberjacks
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