Archived posting to the Leica Users Group, 2002/07/12

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Subject: [Leica] Re: OT Flash guide numbers and they work? OT
From: David Young <dnr@horizon.bc.ca>
Date: Fri, 12 Jul 2002 16:24:20 -0700
References: <3.0.2.32.20020712104411.013a5488@roanoke.infi.net> <3.0.2.32.20020712180529.01588e14@roanoke.infi.net>

Ted:

Simple:

Divide the GN (Guide Number) of the unit by the number of feet (or meters, 
if it's a European model) and you get the f stop he should use.

David.

- ---

At 12/07/02, you wrote:
>Hi folks,
>
>This is right off the wall ancient need to learn it over again.
>
>A chap down the street called and asked me how to use the guide number on
>the flash he has?
>
>Well OK I thought I knew.... however that was 45 years ago when the flash of
>the day had guide numbers. Even then I had trouble figuring that stuff out,
>then I discovered photo life was much easier when you didn't use flash and
>go available light. ;-)
>
>Besides any flash I used over the years has always been something automatic
>no brainer thing.  So please help me with a very simple way to explain this
>guide number and how to make it work with whatever flash and camera is he
>has.
>
>thanks guys and gals.
>ted
>
>
>
>
>
>
>--
>To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html

- ----------

David Young

Please note: New Email Address:  DnR@horizon.bc.ca

- --
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In reply to: Message from Marc James Small <msmall@infi.net> ([Leica] Cook & Perkins Adapter)
Message from Marc James Small <msmall@infi.net> (Re: [Leica] Cook & Perkins Adapter)