Long Exposures with Digital Camera?

Discussion in 'Beyond the Basics' started by elrafo, Mar 28, 2005.

  1. elrafo

    elrafo TPF Noob!

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    Hi again,

    I am used to do long exposures with traditional cameras, I tryied long exposures with a Digital rebel and was a bit disapointed with the noise and green dots...
    do you think it is possible to keep a very sharp picture as you can get with film without accentuate noise? is there a technique or do you need a special camera for that?

    I was used to do 5-10 minutes exposures with PANF illford and the details were incredibles...

    I don't want to compare here the too differents mediums as they are so differents :)

    I just want to know if it is possible with digital or not, Any tips Welcome!

    Raph.
     
  2. KizaHood

    KizaHood TPF Noob!

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    Are you sure you didn't forget to set the ISO speed manually to ISO 50?
     
  3. Digital Matt

    Digital Matt alter ego: Analog Matt

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    I've done exposures of up to 20-30 minutes with a drebel, and the noise was manageable. I frequently do long exposures from 6-10 minutes with a #87 IR filter on my 20D, and there is no noise.

    Always use ISO 100 naturally.
     
  4. elrafo

    elrafo TPF Noob!

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    the Iso speed was set to 100,
    thanks guys for your advide, maybe the 20d is better for this job that the 300...
     
  5. Digital Matt

    Digital Matt alter ego: Analog Matt

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    The 300D works fine. You need to shoot in raw. I use C1 LE, which has excellent anti-noise algorhythms, and takes care of much of the noise automatically.

    Also, you can try this: http://www.photo.net/learn/dark_noise/
     
  6. elrafo

    elrafo TPF Noob!

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    thanks Dmatt!
    this link is really interesting.
     
  7. fadingaway1986

    fadingaway1986 I Burn Easily :(

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    Digital Matt - that is a very long website!
     

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