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Thread: Red, blue, and (a few) green pixels in long exposure shot

  1. #21

    Default Re: Red, blue, and (a few) green pixels in long exposure shot

    Quote Originally Posted by wkteoh View Post
    wildcat | My point is, even with LENR turned off, it shouldn't be all over the place - as in the girl's 10-hour exposure, that would mean that she needs 20 hours in total which she mentioned she did not use.
    It is physically not possible. Either she is lying or you heard wrongly.

  2. #22

    Default Re: Red, blue, and (a few) green pixels in long exposure shot

    Not sure. Gotta ask her again - probably a bad example to quote from anyway.

    I'm not trying to prove any point. I'm just trying to find out if
    a) it's normal to have this level of hot pixels with barely 14-minutes of exposure without LENR?
    b) if it is, do they always have to use LENR for star trails - what if the exposure is 1 or 2 hours or more?
    c) what are the alternatives (what PP steps?) to removing those hot pixels if say, battery runs out

    Hope this is more articulate.

  3. #23
    Senior Member egnaro's Avatar
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    Default Re: Red, blue, and (a few) green pixels in long exposure shot

    Quote Originally Posted by wkteoh View Post
    wildcat | My point is, even with LENR turned off, it shouldn't be all over the place - as in the girl's 10-hour exposure, that would mean that she needs 20 hours in total which she mentioned she did not use.
    I think she might be using film SLR...
    Life is like Photography, to improve, you have to keep shooting!

  4. #24
    Senior Member egnaro's Avatar
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    Default Re: Red, blue, and (a few) green pixels in long exposure shot

    Quote Originally Posted by wkteoh View Post
    Not sure. Gotta ask her again - probably a bad example to quote from anyway.

    I'm not trying to prove any point. I'm just trying to find out if
    a) it's normal to have this level of hot pixels with barely 14-minutes of exposure without LENR?
    b) if it is, do they always have to use LENR for star trails - what if the exposure is 1 or 2 hours or more?
    c) what are the alternatives (what PP steps?) to removing those hot pixels if say, battery runs out

    Hope this is more articulate.
    I think to solve the problem, you have to use ASA50 on Film SLR.
    Life is like Photography, to improve, you have to keep shooting!

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