ottoiso Posted August 24, 2014 Share #1 Posted August 24, 2014 Advertisement (gone after registration) Hello everyone. Pictures fired at high speed (500 or 1000, I don't remeber exactly) have a vertical black stripe on left side of positive. What's happening? Capping or tapering? Bouncing? Moreover: it is possible to fix it by myself? Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/232775-curtain-tapering/?do=findComment&comment=2655922'>More sharing options...
Advertisement Posted August 24, 2014 Posted August 24, 2014 Hi ottoiso, Take a look here Curtain tapering?. I'm sure you'll find what you were looking for!
jerzy Posted August 24, 2014 Share #2 Posted August 24, 2014 First curtain is too slow, the second one is capping it at the end of travel. Nothing for DIY unless you have tools. You could possibly increase tension of first curtain, however the camera shall be CLAed. One tip - inspect if there are no some residues of old, broken film which could disturb curtain in traveling Jerzy Link to post Share on other sites More sharing options...
ottoiso Posted August 24, 2014 Author Share #3 Posted August 24, 2014 Tools by I have dis/reassembled some Fed, Zorki ... Link to post Share on other sites More sharing options...
jerzy Posted August 24, 2014 Share #4 Posted August 24, 2014 Firstly, if you do not have it yet, download repair manual from web. Remove shell and check if there are some pieces of old, broken film which could disturb curtain travel. Disassembly, clean and lubricate curtain drum and all shaft. Advisable to open both winding shafts to clean and lubricate springs. Assembly and adjust. For shutter speed adjustment you may use the method with old TV receiver described in other thread in this forum. PM me if questions. Is it LTM or M Leica? Link to post Share on other sites More sharing options...
ottoiso Posted August 24, 2014 Author Share #5 Posted August 24, 2014 hmmmmm... too difficult... I'll inspect for pieces of film and I'll go to my repairman. It's a Leica II (1932): where the service manual on the web, please? Link to post Share on other sites More sharing options...
ottoiso Posted August 25, 2014 Author Share #6 Posted August 25, 2014 I found pieces of film inside camera, between the gears (see attachment). I have recorded and played back in slow motion the movement of the curtain, it would seem all right. A film test coming soon. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/232775-curtain-tapering/?do=findComment&comment=2656773'>More sharing options...
ottoiso Posted August 25, 2014 Author Share #7 Posted August 25, 2014 Advertisement (gone after registration) ah no! the problem still persists! However it is clear what kind of problem it is: not tapering at all, second curtain does not catch up first curtain before the latter had arrived at goal. Seeing the movie of the movements of the curtains what happens is: when first curtain starts the second curtain occupies a narrow stripe preventing the light to arrive to the film. So I suppose that at the start the second curtain runs together the first curtain for a short then reduces speed, or maybe the first curtain drags the second for a while. Ok, the problem is clear but solution it in not: advices and suggestions are welcome! Link to post Share on other sites More sharing options...
jerzy Posted August 25, 2014 Share #8 Posted August 25, 2014 I suppose that there are still more of broken film pieces somewhere within the camera. And this require that the body shell must be removed. But try following: - set the speed to Z, remove the lens, release the shutter but keep it pressed. Observe movement of first curtain, check if it fully opens. Release the shutter and observe how the second curtain travels. When winding observe overlapping of the first and second curtain, it shall be cca 2mm - insert a sheet if white paper instead of film, observe with various speeds if you are able to see white background across full travel. Even at 1/500 with good light you should be able to see it If you observe anomalies and you will not be able to find any film pieces you will need to remove the shell. Early Zorki and FED are copies of Leica, so if you have some experience is disassembling Russians you will be able to do it with Leica. You may drop me PM shall you need advises how to remove the shell. Jerzy Link to post Share on other sites More sharing options...
ottoiso Posted August 25, 2014 Author Share #9 Posted August 25, 2014 many thanks, jerzy. I removed shell (pieces of fil I found were hidden among gears); and I observed what happens with the curtains: just it happens what I wrote in the previous post. Something I didn't understand? At Z speed frame is entirely opened. Link to post Share on other sites More sharing options...
TomB_tx Posted August 25, 2014 Share #10 Posted August 25, 2014 As ottoiso indicated, the example frame shows the black area at the opening side of the frame, so the problem is the "closing" curtain moving too soon - not the usual "capping" problem which would be at the other side of the frame. Perhaps a curtain latch? I haven't worked on a II shutter to know enough. Link to post Share on other sites More sharing options...
ottoiso Posted August 26, 2014 Author Share #11 Posted August 26, 2014 yes: problem deals with opening side. First curtain runs too late or second curtain runs early. Also I think inspecting latch of the curtain on the top is the next step to move Link to post Share on other sites More sharing options...
jerzy Posted August 26, 2014 Share #12 Posted August 26, 2014 you are right, it is first curtain which is too slow at opening. With the time curtain goes slower as dust and dirt concentrates. So try to remove top cover and clean possible dirt around the speed setting disc and below. However check as well curtain overlapping when both are closed - they shall overlap by cca 2mm. If you have more this would mean that they need to be reglued. Which one is hard to say, you would need to see where they are in winded and released position. But it could as well anything else, as well dirt on a clutch which is on the release shaft. jerzy Link to post Share on other sites More sharing options...
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