Archived posting to the Leica Users Group, 2003/03/08

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Subject: [Leica] Help on Using flash Sf 20
From: Ernest Nitka <enitka@twcny.rr.com>
Date: Sat, 8 Mar 2003 15:48:27 -0500

I have an M7 with the SF 20 flash unit - I 'm not sure it's working or 
that I know what I'm doing.  I don't do much flash work which is why I 
need help.

i attache the SF 20 to the M7 , turn both on with the SF20 being set to 
TTL.  Camera has no film in it so it defaults to ISO 100 I would 
suspect.  My question is that when i shoot towards a wall of books abut 
8 feet away at f/4 neither the SF20 or the M7 indicate that it was an 
adequate exposure ( the flash icon goes away immediated and the 'ok' 
LED on SF 20 does not lite up)  the SF20 is set on f/4.  why is this 
because prior to shooting the SF20 says i should be ok up to 16 feet ( 
GN=66/4 =~ 16).  I have to open up to f/2.8 to get both the SF20 and M7 
to say that there was adequate exposure.  What am I doing wrong?

Ernie - confused in Syracuse

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Replies: Reply from "Greg J. Lorenzo" <gregj.lorenzo@shaw.ca> (Re: [Leica] Help on Using flash Sf 20)
Reply from Mark Rabiner <mark@rabinergroup.com> (Re: [Leica] Help on Using flash Sf 20)
Reply from Rolfe Tessem <rolfe@ldp.com> (Re: [Leica] Help on Using flash Sf 20)