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Thread: Is my lenses spoilt?

  1. #1

    Default Is my lenses spoilt?

    Hihi,

    I took my K-x out to take a couple of shots after a long time of non-use (abt 2 months) with my FA50mm prime and the shots turned out like that..





    Could it be a problem with my lenses or camera??

    Hope the pros here can highlight the issue to me! D:
    Pentax K-x
    Lenses : DAL18-55, FA 50mm F1.4.. Poisoning in progress..

  2. #2

    Default Re: Is my lenses spoilt?

    Any issue with photos taken with your 18-55mm kit lens?

  3. #3

    Default Re: Is my lenses spoilt?

    Quote Originally Posted by xtunbox View Post
    Any issue with photos taken with your 18-55mm kit lens?
    I just took the kit lens out after reading your comment and shot the same position with same lighting and the shots did not have the brown colouring.
    Pentax K-x
    Lenses : DAL18-55, FA 50mm F1.4.. Poisoning in progress..

  4. #4

    Default Re: Is my lenses spoilt?

    Take a piece of white paper in bright lighting and see if the same thing happens with both lens.
    You wont see me much less remember me but i am the guy who makes you look good.

  5. #5
    Member banana0ne's Avatar
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    Default Re: Is my lenses spoilt?

    what's the shutter speed on it?
    I dunno!!!
    It's banana-zero-neh. :)

  6. #6

    Default Re: Is my lenses spoilt?

    Florescent lighting does this, it actually flickers at a very fast rate. Your shutter speed is higher than the flickering rate, so it will capture the scene only partially lit as it is flickering.

    Set a lower shutter speed (<1/60) and try again to see if it helps.

  7. #7
    Senior Member edutilos-'s Avatar
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    Default Re: Is my lenses spoilt?

    CorneliusK is right, that should be the issue.

  8. #8

    Default Re: Is my lenses spoilt?

    Quote Originally Posted by CorneliusK View Post
    Florescent lighting does this, it actually flickers at a very fast rate. Your shutter speed is higher than the flickering rate, so it will capture the scene only partially lit as it is flickering.

    Set a lower shutter speed (<1/60) and try again to see if it helps.
    Tried using both kit and the prime to snap the same area and I believe it is as you've said. The lighting I used was indeed a fluorescent lamp.



    Captured using the prime in AV mode and shutter speed was at 1/500



    Captured using the kit lenses in AV mode and shutter speed was 1/80 (not as significant)

    Thanks everyone for the prompt and useful responses (:
    Pentax K-x
    Lenses : DAL18-55, FA 50mm F1.4.. Poisoning in progress..

  9. #9

    Default Re: Is my lenses spoilt?

    The KX has a problem with some lighting, usually tungsten. Set your white balance to flourescent and see.
    Panasonic TZ-110

  10. #10
    Senior Member creampuff's Avatar
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    Default Re: Is my lenses spoilt?

    Cyberduck, that's typical flicker from a florescent tube. We can't really detect the flicker with our naked eyes but it is there. Solution is to shoot at a lower shutter speed. Nothing wrong with your camera.

    tsammyc, there's plenty of variation when one mentions tungsten lighting, so don't automatically assume the camera didn't get it right. Plenty of light bulbs vary in terms of the color temperature they put out. In reality, very few incandescent lighting come close to the rated color temperature, which does affect the color output coming from the camera. In such situations, it is best to shoot in RAW and adjust the color during post processing.

  11. #11

    Default Re: Is my lenses spoilt?

    Usually when the KX auto white balance is off, its pretty obvious, so I just go to manual white balance and try a few settings until it looks right. I'm a JPEG-only shooter.
    Panasonic TZ-110

  12. #12
    Member banana0ne's Avatar
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    Default

    Quote Originally Posted by tsammyc
    Usually when the KX auto white balance is off, its pretty obvious, so I just go to manual white balance and try a few settings until it looks right. I'm a JPEG-only shooter.
    Would you mind post some photos so our gurus would comment... I doubt that is due to warm tungsten...
    I dunno!!!
    It's banana-zero-neh. :)

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