Archived posting to the Leica Users Group, 2002/03/29

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Subject: Re: [Leica] SF20 Flash question
From: Andrew Schroter <schroter@optonline.net>
Date: Fri, 29 Mar 2002 12:51:11 -0800
References: <000901c1d6e1$59503960$a0ee490c@computer> <004301c1d721$36ffa220$6401a8c0@oemcomputer>

When setting at EI 200 in this case do you shorten the development cycle as
one would in B&W or develop as if it was at 400?
AGS
- ----- Original Message -----
From: "Don Dory" <dorysrus@mindspring.com>
To: <leica-users@mejac.palo-alto.ca.us>
Sent: Friday, March 29, 2002 4:56 AM
Subject: Re: [Leica] SF20 Flash question


> Christopher, the distances are based on output.  So, at +1 over ambient
> light the distance will be shorter.  You see the EV dial is changing the
> ratio to ambient, not supercharging the total output.
>
> You use the EV dial to adjust the look of the shot.  At -1 or -2 the flash
> will fill the shadows but not look like a flash shot.  You would use the
> plus side for several effects.  At weddings the bride is usually in white
so
> you need to force more flash to keep the dress white.  Another use of the
> plus side is to make the subject POP.
>
> This technique is done by underexposing the ambient by one stop or so
> depending on film stock.  Usually done by changing the EI setting or on a
> manual camera setting the aperture smaller.  You then adjust your flash to
> put out more light relative to ambient with a minimum of the same on the
> plus side as the ambient is negative.  Most people on negative film would
> add at least a half stop more.  When printed, the main image is right and
> the background is darker but not obviously darker as in a P/S at night.
>
> In practical terms, say you are using a 400 speed film.  Set your EI at
200,
> set your flash a +1.5, and shoot away.  This is a great method of
separating
> foreground/background in busy settings.
>
> Hope this helps.
>
> Don
> dorysrus@mindspring.com
>
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Replies: Reply from "Don Dory" <dorysrus@mindspring.com> (Re: [Leica] SF20 Flash question)
In reply to: Message from "Christopher Williams" <LeicaChris@worldnet.att.net> ([Leica] SF20 Flash question)
Message from "Don Dory" <dorysrus@mindspring.com> (Re: [Leica] SF20 Flash question)