ISO vs. Shutter Speed

Discussion in 'Photography Beginners' Forum' started by Irishwake, Sep 15, 2009.

  1. Irishwake

    Irishwake TPF Noob!

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    I'm sorry if this has been covered, but I couldn't seem to find a straight answer in my search, and this should be a simple yes/no. I have yet to purchase my first dSLR and am currently using a Sony P&S, and the only option I have in manual mode to adjust the exposure is ISO, I have no setting for shutter.

    Can you adjust ISO and shutter speed independent of one another on most dSLR cameras?

    Thanks!
     
  2. musicaleCA

    musicaleCA TPF Noob!

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    Yes.
     
  3. CSR Studio

    CSR Studio TPF Noob!

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    But do you understand what ISO and shutter speed are?
     
  4. Irishwake

    Irishwake TPF Noob!

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    As I understand it, ISO is the adjustment of the sensors sensitivity to light. Shutter speed is just how long the shutter is open.
     
  5. CSR Studio

    CSR Studio TPF Noob!

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    So, that would mean they would have to be independent of one another, correct?
     
  6. Irishwake

    Irishwake TPF Noob!

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    Heh, well that's what I was thinking, but nowhere does it specifically state that.

    I was asking because my camera boasts it's ability to adjust exposure in manual mode, and yet when I go outside to shoot pictures in manual I get massive noise because I have to set the ISO so high. Anything below ~600 ISO gets nice clarity however they are overexposed since I can't manually adjust the values.

    Obviously I can adjust the balance in photoshop but, for the sake of the thread, I simply couldn't find a straight answer.
     
  7. IgsEMT

    IgsEMT No longer a newbie, moving up!

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    joy of SLRs is that you can control EVERYTHING in it. Although, I got to say, as much as control you get in SLR, I do miss shooting medium format.
     
  8. CSR Studio

    CSR Studio TPF Noob!

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    I understand and you came to the right place. I was just helping you along in your thinking. Always helps me if I think things through even when someone gives me the answer. Sounds like you are going to be getting a new camera soon. Good luck!
     
  9. Irishwake

    Irishwake TPF Noob!

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    Hopefully sooner than later, and thank you!
     
  10. Samanax

    Samanax TPF Noob!

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    All DSLRs give you the option to shoot in Av (Aperture Priority - you choose aperture and camera adjusts shutter speed to match), Tv (Shutter Priority - you choose shutter speed and camera adjusts aperture to match) and M (manual...you choose each setting to get the creatively correct exposure). Some offer AUTO (no input from photographer mode - camera makes all the exposure decisions) and P (Program AE Mode - semi auto mode...similar to AUTO but gives you control of some functions).
     
  11. bazpaul

    bazpaul TPF Noob!

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    my camera has a "Barney the Dinosaur" mode that lets me shoot flashy things without changing any settings :greenpbl:
     

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