federico_prieto Posted April 22, 2009 Share Posted April 22, 2009 <p>Yesterday I did a test with my new Perkeo II. I used a Kodak Portra NC and here you can find what I got.<br> I have a light problem but I can't find the origin. At the begining I thought it was a hole in the bellow, but after 10 minutes looking around with a hand lamp in a very dark room I could not see any hole. Now I am thinking the left upper side of the camera back is the problem, but I don't know how to confirm that. The backdoor close perfect..... Any idea about?<br> warm regards<br> federico</p><div></div> Link to comment Share on other sites More sharing options...
federico_prieto Posted April 22, 2009 Author Share Posted April 22, 2009 <p>picture 2</p><div></div> Link to comment Share on other sites More sharing options...
federico_prieto Posted April 22, 2009 Author Share Posted April 22, 2009 <p>picture 3</p><div></div> Link to comment Share on other sites More sharing options...
federico_prieto Posted April 22, 2009 Author Share Posted April 22, 2009 <p>Picture 4</p><div></div> Link to comment Share on other sites More sharing options...
federico_prieto Posted April 22, 2009 Author Share Posted April 22, 2009 <p>Picture 5</p><div></div> Link to comment Share on other sites More sharing options...
ed_gerken Posted April 22, 2009 Share Posted April 22, 2009 Since it's on the bottom left, look to the top right as you held the camera to take those photos. Memo holder, or film pressure plate mount has punctured through? If it's a rollfilm camera, perhaps you loaded or unloaded in bright light and maybe the film was not wound tight enough. Also possible it snuck in at the lab when they were souping the film. If it's camera-related, it will be in the same spot every shot. If it's film handling issues, it will change position along the roll. -Ed Link to comment Share on other sites More sharing options...
john_shriver Posted April 22, 2009 Share Posted April 22, 2009 <p>Consistent like that from frame to frame -- definitely a light leak in the camera. It it's Portra 400NC, my first hunch is you need to cover the red window when not winding...</p> Link to comment Share on other sites More sharing options...
federico_prieto Posted April 22, 2009 Author Share Posted April 22, 2009 <p>Yes....It's consistent frame to frame. The light leak appears in the bottom left corner in every frame. If the ambient light is strong, the leak appears more definied. If the position relation is totally inverse, then the problem -as Ed said before- is in the upper right corner. In the right side of the camera I can see and area where a light seal is. It is vertical with about 4 milimeters wide and around 4 or 5 centimeters long...May be a new seal is what I need.... who knows... By the way, the film is 160 ASA and the Perkeo II has its own red window cover and it looks ok.<br />Thanks</p> Link to comment Share on other sites More sharing options...
Andrew in Austin Posted April 23, 2009 Share Posted April 23, 2009 <p>I use an older electronic flash unit to look for bellows leaks. I start by inserting the flash unit into the bellows and fire the flash into the back of the camera. In your case pay close attention to the top right side as you face the front of the camera. Check both where the bellows are glued to the camera - and - where the mount to the front standard. </p> <p>The only way to check to see if the problem is with the rear door is to use gaffers tape to cover the seam of the film door and shoot some film in day light.</p> Best Regards - Andrew in Austin, TX Link to comment Share on other sites More sharing options...
chuck_foreman1 Posted April 23, 2009 Share Posted April 23, 2009 Many here are quite sure it's related to a seal or a bellows problem. Is it always within the framed negative? I soemtimes get streaks with Super Ikonta, but I've determined that it must be related to lack of tension on the spool as the streak extended to films edge. Just a theory and easily verified. I'm still getting leaks with a 645 folder that befuddle me! Beautiful exposures none the less! These big negs are just killer.. Link to comment Share on other sites More sharing options...
Rob_the_waste Posted April 23, 2009 Share Posted April 23, 2009 <p>I had some problems with a Zeiss Ikonta where I had some light leakage. I thought my problem might have been at the film gate, so I ran a strip of black electrical tape along the edges. It turned out the problem was somewhere else. However, the hinge on my Chinon CS was loose and it also resulted in light leakage. I did the same thing with the electrical tape on the film gate, and that did fix the problem until I tightened up the hinge. I haven't tried it without tape yet.</p> Link to comment Share on other sites More sharing options...
k5083 Posted April 23, 2009 Share Posted April 23, 2009 <p>You've already gotten plenty of good troubleshooting advice, so I will just say that apart from the light leak, those are very nice pictures!</p> Link to comment Share on other sites More sharing options...
matthew_antonellis Posted December 3, 2013 Share Posted December 3, 2013 <p>Federico -<br> Did you ever solve the light leak mystery? I enjoyed viewing your Perkeo II photographs! I realize you posted this comment/question 4 years ago. I'm preparing to test-shoot my very first vintage medium format camera (also the Perkeo II).</p> Link to comment Share on other sites More sharing options...
matthew_antonellis Posted December 3, 2013 Share Posted December 3, 2013 <p>Federico -<br> Did you ever solve the light leak mystery? I enjoyed viewing your Perkeo II photographs! I realize you posted this comment/question 4 years ago. I'm preparing to test-shoot my very first vintage medium format camera (also the Perkeo II).</p> Link to comment Share on other sites More sharing options...
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