Is my SEL24F18 de-centred :(

Discussion in 'Sony Lenses' started by Noor_ar, Jan 25, 2016.

  1. Noor_ar

    Noor_ar TPF Noob!

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    Hello ,

    The Sony Zeiss 24mm is supposed to be amongst the best APS-C e-mount lens optically , however I have noticed softness in my images so I did a quick test...

    When I focus for the best sharpness on the right side , the left side is OOF and vice versa. I can try to compromise between left and right sharpness and I get less then optimal sharpness on both sides. Stopping down to f/8 f/11 helps to some extent.

    Sample 1

    @f2.8
    Focused on the left :
    l.JPG

    Focused on the right:
    r.JPG

    Attempted compromise:
    c.JPG

    Acceptable at f/8
    _DSC0089.JPG


    Sample 2:

    @2.8
    Right side in focus:
    r2.JPG

    Left side in focus :
    l2.JPG

    Sharp across the frame at f/8
    f8.JPG

    Please inspect these at 100% and tell me what you think ..


     
    Last edited: Jan 25, 2016
  2. Noor_ar

    Noor_ar TPF Noob!

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    Double click and then you can zoom to 100% , sorry the forum won't accept the images due to file size ..
     
  3. cherylynne1

    cherylynne1 No longer a newbie, moving up!

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    I don't know that I've ever heard about this problem with that lens....you're right, it gets fantastic reviews.

    I'm no good at pixel peeping, so I'm not much help with judging it. But could you maybe exchange it for a new copy? Maybe you just got a bad one.
     
  4. Noor_ar

    Noor_ar TPF Noob!

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    Got it used for a bargain ... this is not an option unfortunately :(
     
  5. imstuner

    imstuner TPF Noob!

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    I have the exact lens and love it. Maybe send it into Sony and see how much the repair would cost out of pocket.
     
  6. Noor_ar

    Noor_ar TPF Noob!

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    I have checked with Sony ... all the optics are one assembly that needs to be replaced , I was quoted around 400 USD !
     
  7. Streets

    Streets No longer a newbie, moving up!

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    It could be as simple as depth of field. Use a resolution chart that is centered and exactly 90 degrees from the focal plane. That is the only way to know if you have skewed optics. Your photo did not convince me that a problem existed.
     

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