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Pancolar 50mm f1.8 (zebra) Aperture Problem
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PostPosted: Thu May 21, 2015 7:01 pm    Post subject: Pancolar 50mm f1.8 (zebra) Aperture Problem Reply with quote

Hey mates, i just bought a Pancolar 50mm f1.8 and it has a aperture problem. It's not opening and closing all the way(while ring is showing f1.8 and f22). Also when I spin the ring between f11 and f22, nothing is happening(I mean blades are not closing or opening in this interval). I opened the lens and couldn't find any solution to this problem. And I record a video to help you understand the situation. Video is showing the problematic area between f11 and f22 first. Then the most open position of the lens. Also I'm adding a photo of most open position of the blades(as I said ring shows f1.8 ). Any ideas why this might be happening?

Here is the video, sorry for the dramatic music and camera shaking Smile

https://www.youtube.com/watch?v=B3kFWPYLAoQ&feature=youtu.be

Most open position of the lens