Archived posting to the Leica Users Group, 2002/04/07

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Subject: RE: [Leica] Leica TTL accuracy.
From: Henry Ting <henryting10@yahoo.com>
Date: Sun, 7 Apr 2002 09:30:30 -0700 (PDT)

YES !!!!
All tests with film.


- --- James Harrison <leicajh@earthlink.net> wrote:
> Did you have film in the cameras when you tested the
> flash TTL?  jh
> 
> 
> > [Original Message]
> > From: Henry Ting <henryting10@yahoo.com>
> > To: Leica-users
> <leica-users@mejac.palo-alto.ca.us>
>  > Date: 4/7/2002 1:19:21 AM
> > Subject: [Leica] Leica TTL accuracy.
> >
> > 
> > About a month ago, I added a Metz 54 MZ-3 to the
> M6
> > with different modules for the M6 and R6.2 TTL.
> > The initial results were disappointing. I tested
> it
> > with close to 18% neutral background and in all
> > situations with both TTL and the automatic all my
> > pictures came out underexposed. I made addtional
> tests
> > with the flash, but metering it with the flash
> mode of
> > the Sekonic L-3088 and sure enough the Metz screen
> > shown with the distance to F-stop is one-stop
> under
> > compared to the Sekonic meter reading. However,
> using
> > FULL flash with no TTL or auto mode, the flash
> output
> > in combination with the zoom capability shows
> exactly
> > 177 GN against the meter with the appropriate
> > flash-to-subject distance.
> > 
> > I'm at a lost in trying to determine the source of
> > this problem. My understanding is the flash output
> is
> > determined by the camera in TTL mode, so logically
> the
> > under-exposure problem should lie with my camera.
> > However, in auto-mode, the control is in the flash
> and
> > yet the pictures are also under-exposed, so
> logically
> > the problem should be with the flash. And yet
> testing
> > the flash in FULL manual, the Sekonic reads the
> output
> > as "right on". By the way, the under-exposure is
> > consistent with both my M6-TTL and the R6.2 with
> Metz
> > modules SCA 3502 and SCA 351 respectively.
> > 
> > I ran out of ideas in trying to trouble-shoot this
> > problem. I could use the Metz 54 MZ-3 with the +1
> > compensation to overcome this, but that's a big
> price
> > to pay. 
> > 
> > __________________________________________________
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> 
> 
> --- James Harrison
> --- Wichita Falls Texas, USA
> --- KD5LMX
> --- leicajh@earthlink.net
> --- http://home.earthlink.net/~leicajh/
> 
> 
> --
> To unsubscribe, see
http://mejac.palo-alto.ca.us/leica-users/unsub.html


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