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Guest Horst Wittmann

Klosterkirche "St. Georg und Maria" , Wahlsburg II

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    • By jaeger
      I just wanted to verify if focus shift is a design flaw on 24mm Lux or something it can be fixed by adjustment.
      Since this lens has forgiving depth of field so the focus shift will only noticeable at the following conditions....
      1) at close subjects that's less than 1.5 meters, please set yours at 0.7 meter on the barrel to test.  (don't push all the way, some lenses might go below 0.7m that your viewfinder doesn't)
      2) provided your lens and camera are perfectly calibrated, which supposed to be no issue wide open at f/1.4 at any range.   The focus shift will happen started from half click increment.  Greater than f/2.8 will stop seeing focus shift just simply becoz this lens has very wide DOF.
      I use this lens for close subject intensively so please don't tell me how to use it or how you use it -- thank you in advance.  I start noticing all my pictures are out of focus between 0.7 to 2m when aperture is set to f/2 plus or minus half stop.  So I did a test at home to confirm my copy does have focus shift between f/1.8, f/2 and f/2.4 (I include half click).  My lens @f/1.4 is perfect at any range, every click closing (not step) will result in two inches back focus,  @f/2 is worst at about 5 inches total.  Beyond that range like f/2.8 is fine, it starts to recover a wide range of DOF - some called it zone focusing. 
      If it's not a design flaw, then I need to speak to a Leica technician who is going to fix this lens.  Thank you very much.
       
       
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      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
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      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
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      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
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