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Thread: Help with white "pixels" on my photo's.

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    Previously modd1uk Cornholio's Avatar
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    Help with white "pixels" on my photo's.

    Two quick examples :

    The spots stay in the same place throughout any number of photo's, ive cleaned the lens but to no joy.





    Sorry for photo size, can anybody help me ?

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    Previously modd1uk Cornholio's Avatar
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    Re: Help with white "pixels" on my photo's.

    In the time its took me to start the thread and for me to do some reading ive found out that they are " Hot pixels" can vary in colour, but on the sony alpha series they are mostly white due to software processing. They vanish when i drop the exposure to 5seconds, and from what ive been reading thats quite good considering how common hot pixels are.

    Panic over, i just need to learn how to use my camera proper now .

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    Moosing about! CAT-THE-FIFTH's Avatar
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    Re: Help with white "pixels" on my photo's.

    Quote Originally Posted by modd1uk View Post
    In the time its took me to start the thread and for me to do some reading ive found out that they are " Hot pixels" can vary in colour, but on the sony alpha series they are mostly white due to software processing. They vanish when i drop the exposure to 5seconds, and from what ive been reading thats quite good considering how common hot pixels are.

    Panic over, i just need to learn how to use my camera proper now .
    What camera do you have BTW?

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    Banhammer in peace PeterB kalniel's Avatar
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    Re: Help with white "pixels" on my photo's.

    Quote Originally Posted by CAT-THE-FIFTH View Post
    What camera do you have BTW?
    Sony A200

    OP, as you've found out - perfectly normal. Most cameras have a dark frame substitution mode for long exposures to counter exactly this.

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    Seething Cauldron of Hatred TheAnimus's Avatar
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    Re: Help with white "pixels" on my photo's.

    Are you on the latest firmware?

    On a Pentax k20d I bought as my spare a few months back it suffered terribly until I ran the pixel mapping utility.

    Imho they should tell all new owners to do that!
    throw new ArgumentException (String, String, Exception)

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    Re: Help with white "pixels" on my photo's.

    Turn on 'long exposure noise reduction' in the menu - this is exactly what it's designed to get rid of. Alphas also have a system where they map the hot pixels on the sensor once a month, so shifting the date forwards by a year or too will force a re-map. Finally, those will disappear with the slightest hint of noise reduction in any program.

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    Previously modd1uk Cornholio's Avatar
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    Re: Help with white "pixels" on my photo's.

    Yeah its the sony alpha 200, i wasnt aware camera firmware could be updated !? Never changed any settings really, just played around with manual mode. Long exposure noise reduction is on though i did check that.

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