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Thread: Sony 50 1.4

  1. #1
    Jamesmd
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    Sony 50 1.4

    Hi all

    Today after some time not using this lens , all was out of focus at 1.4 so I had to aply -17 of micro foc adj !!!

    What went wrong ??
    If it stays like that it seems to be ok , but I wonder if something is lose or somethig moving
    aparently , and that I know, it hasn't been droped or knoked
    Any idea ?

    Thanks

  2. #2
    Senior Member edwardkaraa's Avatar
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    Re: Sony 50 1.4

    This is a first! Never heard of lenses going out of calibration by themselves.
    M262 ZM 25/2.8 35/1.4 50/2 85/2

  3. #3
    Jamesmd
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    Re: Sony 50 1.4

    Hi Edward ,

    obviusly something hapened .

    Coul it be someting electronic ? ( jus thinking out loud )

    Cheers

  4. #4
    nautilus
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    Re: Sony 50 1.4

    I don't know how often you use this lens and how the distances of your subjects change and how often you change your aperture.
    Focus shift can change with both factors theoretical.
    You could analyze that to get sure what has happened.

  5. #5
    Jamesmd
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    Re: Sony 50 1.4

    yes , I'll do a proper test and see what going on.

    thanks

  6. #6
    Senior Member edwardkaraa's Avatar
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    Re: Sony 50 1.4

    If it's of electronic nature, the usual measures should be cleaning the lens and camera contacts, removing the battery from the camera for 2-3 minutes, then checking again.
    M262 ZM 25/2.8 35/1.4 50/2 85/2

  7. #7
    Senior Member dhsimmonds's Avatar
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    Re: Sony 50 1.4

    Is it reproduced with other lenses? If not then it is that particular lens and not the camera.
    Cheers, Dave
    www.simmondsphotography.com

  8. #8
    Jamesmd
    Guest

    Re: Sony 50 1.4

    hi
    Only with that lens ,all others are fine .

    I'll clean everything and see .

    Thanks

  9. #9
    nautilus
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    Re: Sony 50 1.4

    One more;-)
    Did you use third party sigma lenses and did focus adjustment for them?
    Sigma uses Minolta/Sony ID's and the camera overwrites the settings for this ID's. If you have bad luck the third party lens uses the lens ID of your original 50mm lens.

  10. #10
    Jamesmd
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    Re: Sony 50 1.4

    Hi nautilus ,

    I didn't , but good to know

    thanks

  11. #11
    Senior Member edwardkaraa's Avatar
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    Re: Sony 50 1.4

    Talking about the 50/1.4, I just discovered today this lens can produce a very nice 3D effect, a la Carl Zeiss
    M262 ZM 25/2.8 35/1.4 50/2 85/2

  12. #12
    Jamesmd
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    Re: Sony 50 1.4

    Hi Edward , yes its a great lens I think.

    I've checked everything ,cleaned everything and I still need the -17 .
    If nothing changes , its not a problem , no ?

    cheers

  13. #13
    Senior Member edwardkaraa's Avatar
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    Re: Sony 50 1.4

    Obviously not
    M262 ZM 25/2.8 35/1.4 50/2 85/2

  14. #14
    Senior Member douglasf13's Avatar
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    Re: Sony 50 1.4

    Quote Originally Posted by edwardkaraa View Post
    Talking about the 50/1.4, I just discovered today this lens can produce a very nice 3D effect, a la Carl Zeiss
    I've been noticing the same thing, lately. Although it isn't quite as sharp as my SMC Tak wide open, the Sony 50 is very good at f2 and above, and it's my walk around lens of choice.

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