d90 Autofocus problem

Discussion in 'Photography Beginners' Forum' started by Photos de l'amour, May 19, 2010.

  1. Photos de l'amour

    Photos de l'amour TPF Noob!

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    I don't know if I have the wrong settings or what. I am getting irritated :grumpy:

    I have it set so I can choose the focus point so I do and I take the photo, it seems to focus behind what I focused on. Is there something I am missing? Are there some settings any of you know of that are better? Please help!
     
  2. Aayria

    Aayria TPF Noob!

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    which focus point are you using for your autofocus in the display grid? It focus's best if you use the center intersection.
     
  3. Photos de l'amour

    Photos de l'amour TPF Noob!

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    Do you mean out of the 11 on the display, which one do I pick? If so, I move it around and find where I want the focus. Usually on the left or right of center. How would I focus on a face on the left of center if I use the center? Wouldn't the face be in the center then? Sorry if I am confused.

    In the menu I have the autofocus set to single point and center point focus and normal. AF on AF-S if that helps.
     
  4. Aayria

    Aayria TPF Noob!

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    You can still focus the way you're describing, but from what I understand, the D90 does much better with the center focus point. The way I ussually get around it on my D5000 is to focus in the center, and then hold the focus lock button down on the back of the camera while I recompose and shoot.
     
  5. Photos de l'amour

    Photos de l'amour TPF Noob!

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    I have tried so hard to understand the AE-L and AF-L button. I am not sure what to setting to use in the menu for it.
    Do you just focus and then hold that down, move the camera to where you want the subject then shoot while holding it? I have really read the manual and messed with it but can't figure it out.
     
  6. aliciaqw

    aliciaqw TPF Noob!

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    Are you focusing then recomposing? That could be the problem. And yes, the center point is the sharpest, most accurate. The outer points are a little softer.

    Make sure your exposure is good. Bad exposure can make your focus look soft.
     
  7. Photos de l'amour

    Photos de l'amour TPF Noob!

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    I am reading the meter and it is in the middle. So I think exposure is fine.

    So should I change settings from single point to something else? I usually pick the focus point and then focus and shoot. I have not used the AE-L button cuz I don't understand it yet. If I have to focus on the center then do I just hold that button and move to where the subject is where I want and then shoot??
     
  8. Aayria

    Aayria TPF Noob!

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    Yep, that's about it, I pick my focus pressing the shutter halfway down, then hold in the focus lock and let go of the shutter. While holding in the focus lock I recompose and shoot.

    I ussually shoot in AF Area mode Continuous mode.. I don't normally use "dynamic" focus mode. I used to have issues with dynamic focus moving my focus point because it thought my subject moved and would adjust for movement.
     
  9. lvcrtrs

    lvcrtrs TPF Noob!

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    +1
     
  10. KmH

    KmH Helping photographers learn to fish Supporting Member

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    The D90 only has a single cross-type focus point, and it's the middle point. Plus, you can change the size of that center focus point (menu a2, page 174 of the manual).


    There are 2 auto focus settings that have to be made:
    1. Focus mode
    2. Focus area mode
    For taking pictures of non-moving subjects you want the focus mode set to AF-S (single focus) or AF-A.

    For portraiture you want the focus area mode set to single point (page 173).

    See page 57 for Focus Lock info and page 200 (menu f4) for assigning the AE-L/AF-L button function.
     
    Last edited: May 20, 2010
  11. Photos de l'amour

    Photos de l'amour TPF Noob!

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    Ok, I have it set to AF-S. So I should just use the center point to focus and then hold the AE-L button, then move the camera to have the subject where I want and shoot? I was changing the focus point to one on the outside edge and shooting. Seemed like a very soft focus. I will work on using the center point. Thanks
     
  12. KmH

    KmH Helping photographers learn to fish Supporting Member

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    I recommend moving the AF function off of the shutter release button (page 200, menu f4) and to the AE-L/AF-L button as the AF-On mode.
     

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