Canon 20D Highest Usable ISO?

Discussion in 'Beyond the Basics' started by ftacnikaustin, May 23, 2010.

  1. ftacnikaustin

    ftacnikaustin TPF Noob!

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    So I'm taking a few pictures at a friends graduation ceremony tomorrow and I was wondering what the highest usable ISO is on my 20D? I know it goes up to 3200 but the shots look pretty bad. Is there a number I should not go past? I know it's going to be pretty dark so we'll see how this is going to turn out. Thanks
     
  2. UUilliam

    UUilliam TPF Noob!

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    First:
    What lens are you using and what is the largest aperture

    secondly: how is the lighting? (what light source is it.)


    my guess however (i haven't seen a 20D iso test yet)
    is about 1600

    another tip i learned recently, underexposing to get that quicker shutter speed is okay, you can fix it easily with Camera RAW / Photoshop
    As long as you don't underexpose too much, about 1 - 2 stops maximum.
     
  3. Misfitlimp

    Misfitlimp TPF Noob!

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    prolly more like 400 - 800
     
  4. KmH

    KmH Helping photographers learn to fish Supporting Member

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    Noisy photos are way better than blurry photos. Set the ISO high enough to get sufficient shutter speed.
     
  5. ftacnikaustin

    ftacnikaustin TPF Noob!

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    Thanks guys. I used my 50 1.8 and set my ISO to 800 max shutter speed about 30 or 25 depending on the shot.
     
  6. Baaaark

    Baaaark TPF Noob!

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  7. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    I use up to 1600 on my 20Ds...but only when the shots aren't too important or it's a dire need for shutter speed.

    Normally, ISO 800 is as high as I like to go.
     

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