Archived posting to the Leica Users Group, 1999/04/29

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Subject: Re: [Leica] Electronic Flash Sync, Marc's response
From: Marc James Small <msmall@roanoke.infi.net>
Date: Thu, 29 Apr 1999 10:45:23 -0400

At 06:42 AM 4/29/99 PDT, Dan States wrote:
>Hi Marc and or any others who may know the answer to this...My IIIF is 
>timed 1/30 1/60 etc...everybody I talk to seems to have 1/25th etc.  
>Am I mis identifying my camera as a IIIf?  

The shutter assembly was changed in the course of production:  the BD's are
the last cameras with the original Barnack-designed shutter assembly, while
the RD's introduced a new and lighter shutter assembly.  The shutter-speed
sequence is different:

On the IIIc/IIIf BD:
T - B - 1 - 1/2 - 1/4 - 1/10 - 1/15 - 1/20 - 1/30 - 1/40 - 1/60 - 1/100 -
1/200 - 1/500 - 1/1000

While, on the IIIf RD, the sequence runs:

T - B - 1 - 1/2 - 1/5 - 1/10 - 1/15 - 1/20 - 1/25 - 1/50 - 1/75 - 1/100 -
1/200 - 1/500 - 1/1000

And, yes, with the IIIg, yet another shutter assembly was adopted, with the
current shutter-speed sequence.

Of course, the If and IIf cameras had a similar arrangement to the IIIf,
mutatis mutandis.

Marc


Marc

msmall@roanoke.infi.net  FAX:  +540/343-7315
Cha robh bas fir gun ghras fir!