Exposure indicator A vs M

Discussion in 'Photography Beginners' Forum' started by Mizzle, Jun 1, 2008.

  1. Mizzle

    Mizzle TPF Noob!

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    Hello All, I have been browsing for a couple of months and bought my first dslr recently. been trying to practice
    I will start my first thread with a dumb question......
    Lets say I was taking a picture of a object in auto mode, the camera set itself to shutter speed of 60 and aperture of f5.6.
    Now I switch to manual and start off with 60 f5.6 the exposure indicator is all the way to the left stating it isn't the right exposure. If its the same object with the same lighting why is it ok for those values in auto but in manual it states an underexposure?
    Confused.....
    Thanks in advance
     
  2. Alfred D.

    Alfred D. TPF Noob!

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    Hi Mizzle,

    welcome to the board.

    Maybe in Manual the Image Stabilisation is switched off too so that the whole deal gets more susceptible to camera shake? A higher shutter speed (the meter seems to advise that, doesn't it) would counter camera shake.
    The trade-off is of course that a higher shutter speed requires more light as well! With Image Stabilisation off you will need to use flash sooner.

    Have fun!
     
  3. Jon0807

    Jon0807 TPF Noob!

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    Also in Auto mode the camera sets the iso as well I believe. When you switch to manual it'll go back to whatever you have it set on. This may be why you're getting such a different reading
     
  4. Mizzle

    Mizzle TPF Noob!

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    In Auto the iso was set to 400, I tried using that in manual and still had no luck with the exposure indicator it was still all the way to the left.
     
  5. Mizzle

    Mizzle TPF Noob!

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    I can't find anything in the settings about changing the image stabilization I even looked in my manual... I have a rebel xt
     
  6. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

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    the rebel has no image stabilization - that is in the lens (if it has it) and is the same for all canon cameras. You can tell as canon lenses have the letters IS in their name to tell you if they have the feature
    As for the settings being different I can't rightly say sorry.
     
  7. Jon0807

    Jon0807 TPF Noob!

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    hmmm...maybe in auto mode its compensating for flash being triggered? I'm just guessing here, I don't often use auto mode but I do remember the flash popping up alot when I least expected it. It's the only reason I can think that the exposure is so off with all settings being the same.
     
  8. Mizzle

    Mizzle TPF Noob!

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    So is it wrong/bad to shoot if the meter states a wrong exposure? Its way off
     
  9. bahandi

    bahandi TPF Noob!

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    I would also agree to the Auto mode setting off the flash... test it out.

    As for the 'wrong exposure', this is a rather meaty subject. Short of it is, the light meter only tells you what IT thinks, not what really is.

    I post this a lot, but get the book "Understanding Exposure" by Bryan Peterson. He talks about the light meter in pretty good detail.
     
  10. RyanLilly

    RyanLilly No longer a newbie, moving up!

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    It could also be the metering method, I think that auto uses "average" and possibly in manual you have it set to "center weighted average." When you switch from auto to manual, look at the display and see is your metering mode changes.
     
  11. Mizzle

    Mizzle TPF Noob!

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    hmmm, I will look into it, Thanks
     
  12. Jon0807

    Jon0807 TPF Noob!

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    good call, I didn't think of that :thumbup:
     

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