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MarkoKovacevic
05-25-2009, 15:28
Was reading: http://www.apug.org/forums/forum65/62541-new-film-cassettes-vs-old-leica-cassettes-skewed-negatives.html about the Leica.
I was wondering if any of you have experienced this with your Leica?
colyn
05-25-2009, 15:41
This is a common issue with screw mount Leicas before serial number 570xxx. The original FILCA cassette is slightly taller than the newer mass produced cassettes. As a result the shorter cassettes will drop slightly (approx 4mm) in the chamber..
MarkoKovacevic
05-25-2009, 15:42
Ugh, that sucks. Any easy way to correct this?
colyn
05-25-2009, 15:51
Ugh, that sucks. Any easy way to correct this?

I have several pre-570xxx Leicas and don't see where it is an issue since the alignment does not cause a real issue. If however you want perfect alignment you'll need to get the FILCA cassettes and load your own film. Some people will make shims to raise up the cassette..

Starting with the IIIf 570xxx a bar was added to the bottom plate to hold the film in alignment as it came out of the cassette. But you will have to have the crate modified if you want to use this plate on the IIIc or early IIIf..
MarkoKovacevic
05-25-2009, 15:55
Does the photo start going into the sprocket holes, and if so, around how much(ie does it go to half the sprocket, more, less, ect)
Melvin
05-25-2009, 15:56
It's easy to correct. You just put some felt in the latch on the baseplate where it touches the cassette. Cut a little ring. You don't need glue, just press it into place.
colyn
05-25-2009, 16:01
Does the photo start going into the sprocket holes, and if so, around how much(ie does it go to half the sprocket, more, less, ect)

Usually no but it can drop to the top edge of the sprocket hole.
MarkoKovacevic
05-25-2009, 16:04
Usually no but it can drop to the top edge of the sprocket hole.

Hmm. When I get my IIIa I'll try Melvins way with felt from the film canister.
L39UK
05-26-2009, 12:52
This problem with the older Leica models has been discussed on
Sanders McNew's " Color with Summar" thread:-
http://www.rangefinderforum.com/forums/showthread.php?t=63203

Originally Posted by Erik van Straten http://www.rangefinderforum.com/forums/themes/graphite/buttons/viewpost.gif (http://www.rangefinderforum.com/forums/showthread.php?p=885407#post885407)
To avoid the appearance of sprocket holes in the film gate of early Leica-screwmounts, just glue a felt ring into the cassetteopener in the bottomplate that will push up the cassette a bit (2-3mm). Check with some useless film into the filmgate (camera at "Z") if there are still any sprocket holes visible.
Erik.

Originally posted by sanmich:-
I ended up doing something a bit different:
The round metal piece on the baseplate on which the film cannister lays is steped. If you open the screw that holds it, and put it upside down, it will push the canister a bit without adding friction. __________________
Michael