grain/noise/dust problem!!!

Discussion in 'Beyond the Basics' started by danalec99, May 25, 2004.

  1. danalec99

    danalec99 TPF Noob!

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    Excuse the size, please!

    I had emailed Mark while the forum was down. havent heard form him yet.

    The question is about the grain. Is this my camera? unclean lens?
    Any help would be valuable!

    Thanks in advance!!!

    /edit - Sorry about the red x.

    Here is the link: http://public.fotki.com/zestfulpuma/misc/random_shots/

    Images 3 and 4. You should click on Get Original Uploaded Photo to see what I am talking about.
     
  2. Jeff Canes

    Jeff Canes No longer a newbie, moving up!

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    Red X's
     
  3. Corry

    Corry Flirtacious and Bodacious Supporting Member

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    Yep, same here.
     
  4. danalec99

    danalec99 TPF Noob!

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    It is the URL right now. Can you see it?
     
  5. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    What film are you using?
     
  6. danalec99

    danalec99 TPF Noob!

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    I use a 10D. This noise was not there until a few days ago!!
     
  7. danalec99

    danalec99 TPF Noob!

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    PLUS, I had not cleaned my lens since I bought it about two months ago. Do you think that would be the reason?
     
  8. mrsid99

    mrsid99 TPF Supporters Supporting Member

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    Check the EXIF settings, you've got the ISO at 1600.
     
  9. danalec99

    danalec99 TPF Noob!

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    You bombed the bull's eye mrsid99 :), I just checked the info of one of the images on the LCD and it said ISO is 1600. How did you know that? and how do we fix this?

    I know how to lower it, but do we have to change the ISO frequently? Or is there a perm number?
     
  10. mrsid99

    mrsid99 TPF Supporters Supporting Member

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    It just looked like noise so I guessed that the ISO might be high and checking the EXIF confirmed it.
    To set the ISO press the Drive-ISO button on the top right of the camera (middle one of the three) and adjust the ISO with the wheel on the back, when it's where you want it (shown in the top LCD) press the Drive-ISO button again and you're ready to shoot.
    Have fun!
     
  11. danalec99

    danalec99 TPF Noob!

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    I'm confused with ISO and shutter speed now!!!
     
  12. mrsid99

    mrsid99 TPF Supporters Supporting Member

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    The lower the ISO number the less "grain" (noise) and consequently better quality but it also means lower sensitivity.
    Higher ISO more grain but higher sensitivity so typically you use higher numbers in low light conditions to keep the shutter speed up. Particularly when the camera is handheld so long exposures can't be used.
    There's no permanent number, just the optimum for the conditions. I normally leave mine on ISO 100 but change it as needed.
     

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