Re: f stops

on 30/10/01 3:06 pm, Guillermo at penate@home.com wrote:

>
>> ----- Original Message -----
>> From: "ragowaring" <ragowaring@btinternet.com>
>
>>> Anyway, enough of an introduction; could anyone please tell me how to
>>> calculate the natural progression of f stops doubling exposure from one
>>> number to the next, or post a list of these.
>
> They follow a geometric progression that make the f/stops increase by a
> factor of square root of 2
>
> Need a more complete explanation? let me know.
>
> Guillermo
>
>
>
>
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Wow!, is it really that simple. Of course, it all makes sense now and it
will be very helpful. Thankyou for your replies. If it is not too much
trouble a complete explanation would be very welcome Guillermo. Thankyou
also to Murray for how you calculate the exposure for a given camera; this
method will help me relate one camera to another; also thanks to Bill
Erikson.

I too don't know what happened to Philip Arny but he has sent me masses of
empty messages. I guess if the cat continues on the keyboard this way it
may come up with one of Shakespear's plays orthe meaning of life, universe,
everything.

Alexis
Received on Tue Oct 30 15:57:57 2001