Archived posting to the Leica Users Group, 2014/03/11

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Subject: [Leica] Interesting technical problem--your thoughts?
From: mark at rabinergroup.com (Mark Rabiner)
Date: Tue, 11 Mar 2014 21:53:18 -0400

Looks like a re loadable cassette at the end of its run. Time to replace.
Happened to me a million times. You can try to keep them out of the sun but
you'll get this anyway.


On 3/11/14 8:07 PM, "Jim Nichols" <jhnichols at lighttube.net> wrote:

> Jim,
> 
> My original Leica, which I still have, was a IIIa.  I shot numerous
> rolls of bulk film, but I loaded the film into Kodak cartridges, which
> were fairly simple to separate and reassemble. I don't recall ever
> seeing anything like your example, which shows the fogging goes to the
> edge of the film stock.  I have never used Leica cartridges, but seem to
> recall they have a felt seal.  I think the problem stems from the
> cartridge.  Perhaps a loose felt strip that only bends back on occasion.
> 
> Just my two cents.
> 
> PS:  Does the "leak"  always show up in the same spot relative to the
> frame, or is the placement more random?
> 
> Jim Nichols
> Tullahoma, TN USA
> 
> On 3/11/2014 6:44 PM, Jim Shulman wrote:
>> Well, I've been shooting with my IIIb/SCNOO ensemble for a few weeks, and
>> love it.
>> 
>> 
>> 
>> With one exception:
>> 
>> 
>> 
>> The other day I was merrily shooting away with Kodak 5222 loaded into
>> several of the Leica metal FILCA cartridges for the IIIb/SCNOO
>> combination.  After processing, I noticed that several of the frames 
>> seemed
>> to have a strange fogging, almost like a crescent dagger from the bottom 
>> of
>> the frame (bottom, as in what was in the bottom of the camera) about every
>> so often, maybe five frames total out of 40.  These came when I was
>> shooting in regular daylight--some bright sun, some shade, and did my film
>> loading in subdued light (or indoors).  I've attached an image file 
>> showing
>> the offending "dagger" fogging.
>> 
>> http://gallery.leica-users.org/v/focusit/filca+fog.jpg.html
>> 
>> 
>> 
>> 
>> 
>> Seemed strange.  So I ran a side-by-side test at end of day, first 
>> shooting
>> a roll of FILCA-loaded Kodak 5222, then a roll of Fuji Acros 100 in the
>> standard Fuji metal cartridge.  Both came out fine with no dagger-like
>> fogging.  The sun was out, but not brightly.
>> 
>> 
>> 
>> I thought I might have misloaded the FILCAs for some reason, so I loaded
>> another and went out shooting in regular bright daylight.  Again, every so
>> often there was the dagger-like fog at the bottom of the occasional frame
>> (and no pattern to the "daggers"; they appeared irregularly.)
>> 
>> 
>> 
>> Yesterday, I ran another test: I shot a roll of very old Plus-X, in the
>> standard Kodak cartridge, in bright sunlight.  I took off the lens and
>> aimed the camera at the bright sun; I shot in brightly lit areas, I shot 
>> in
>> dim areas.  No fogging whatsoever on the film.
>> 
>> 
>> 
>> Any idea what's happening?  If it were a camera light leak, it would have
>> happened on all types of film cartridges, both standard and Leica FILCA.
>> If it were a FILCA problem alone, it would have leaked when I shot toward
>> the end of day (in the double-blind test).  If it were a darkroom loading
>> problem, it would have happened to all my film.
>> 
>> 
>> 
>> One suggestion I've received is that there's a tiny light leak near the
>> take-up spool, based on the sharp definition of the leak pattern.  If
>> that's the case, though, why not on both FILCA and non-FILCA loads?  After
>> all, the take up spool has nothing to do with the type of film cartridge.
>> 
>> 
>> 
>> As the King said, "It is a puzzlement".
>> 
>> 
>> 
>> Thanks,
>> 
>> Jim Shulman
>> 
>> Wynnewood, PA
>> 
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>> 
>> 
>> 
> 
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information




-- 
Mark William Rabiner
Photographer
http://gallery.leica-users.org/v/lugalrabs/




Replies: Reply from jshulman at judgecrater.com (Jim Shulman) ([Leica] Interesting technical problem--your thoughts?)
In reply to: Message from jhnichols at lighttube.net (Jim Nichols) ([Leica] Interesting technical problem--your thoughts?)