Abnormal output! [Canon350D]

Discussion in 'Critique Forum Archives' started by Nictalopen, Aug 27, 2006.

  1. Nictalopen

    Nictalopen TPF Noob!

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    I have problems when there's a lack of light like in this case. Any clues?

    [​IMG]

    Thanks.
     
  2. spako

    spako TPF Noob!

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    Was this taken as RAW?
     
  3. Nictalopen

    Nictalopen TPF Noob!

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    I took this about a month ago. I'm not sure. I think it was raw. Exported to jpg right after the shot. I only know that I get the same results as raw and jpg when there's lack of light. So it doesn't matter. :er:
     
  4. fotonemer

    fotonemer TPF Noob!

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    Is your iso setting on auto? Choose a lower iso manually use a longer exposure. try again. The higher the iso setting the more 'noise' you get on the image like this one.
     
  5. Nictalopen

    Nictalopen TPF Noob!

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    Ok fotonemer. I know that it's noisier as you put the higher iso. ISO on Canon 350D is not automatic, but manual. This noise on 1600 ISO isn't possible. It's definitely something else. I took photos with 1600ISO, which were noisy but not like this one and not 'red noisiness'.
     
  6. fotonemer

    fotonemer TPF Noob!

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    Then i am wrong. 1600 is still pretty high.
     
  7. Peanuts

    Peanuts TPF Noob!

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    When you converted to JPEG, did you happen to push your exposure upwards? That might have caused this type of graininess and the purply-red hue (that is what I find at least)
     
  8. abraxas

    abraxas No longer a newbie, moving up!

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    Then also try higher iso with longer shutter speed- also increase the ev+.
     
  9. mentos_007

    mentos_007 The Freshmaker!

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    it looks for me as software problem (in your pc) maybe it adjust exposure automatically?
     
  10. Nictalopen

    Nictalopen TPF Noob!

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    Thank you very much! Thank you all! I'll check this all out.
     
  11. Digital Matt

    Digital Matt alter ego: Analog Matt

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    It looks like either you shot a very underexposed shot and cranked up the exposure in the raw file, or you just shot at a high ISO for a long exposure. I would guess that 30 seconds at ISO 1600 would probaby give you something similar to this.
     
  12. JamesD

    JamesD Between darkrooms

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    Exactly what I was thinking, Matt. As you increase the amplification (ie ISO setting) the noise increases some... but a long exposure will increase it hugely. It's the opposite of impossible; it's a fact.

    Lower the ISO and open the aperture.
     

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