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Author Topic: Very strange problem with a Fisheye lens  (Read 484 times)

Ed Stander

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Very strange problem with a Fisheye lens
« on: May 24, 2019, 09:03:20 am »

Hi -
  I have a Mamiya 24mm fisheye with the oddest problem.  It focuses fine at f/4, but goes out of focus as one closes down the aperture.  Once closed down, no amount of focusing will bring the image into sharp focus.  I have a second example of this lens that doesn't suffer from this at all - so it doesn't seem to be anything I'm doing. 
  Has anyone had a similar problem with any lens?  Any suggestion what might be done to fix the problem?
  Best of all - Ed
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