A&P Macro and depth of field...

Discussion in 'Lifestyle' started by jshively, Feb 16, 2010.

  1. jshively

    jshively OT Supporter

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    Have a probably stupid and hopefully simple question when using macro lenses (tamron 90mm).

    When I shot this dish with a non-macro lens at f/11 everything comes out clear. However, when I shoot it with the Tammy at f/11 it still blurs out in the background.

    It almost seems like I have to take whatever aperture I normally would shoot at double it to get the same result with a macro lens. Is this correct or am I doing something wrong?

    With the Tammy:

    [​IMG]
     
  2. jared_IRL

    jared_IRL OT Supporter

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    dof is a product of your aperture in combination with your distance from the subject and your lens' focal length.

    If you're camera is much closer to the subject with the macro lens (which i'm sure it is), then your dof is going to be much more shallow.
     
  3. jshively

    jshively OT Supporter

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    *lightbulb goes off* That makes sense.

    I was close to a foot from the bowl so I will have to increase it to get everything clear. If I was further away I could decrease.

    Thanks!
     
  4. xenon supra

    xenon supra OT Supporter

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    or use a tripod, stay close, and shoot at f/22 + to get more in focus.
     
  5. jshively

    jshively OT Supporter

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    :bigthumb:

    I need to invest in a better tripod. Mine was like 20 bucks at Best Buy and scares me to put any weight on it.
     
  6. MaxSE

    MaxSE No Max, No More

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  7. jshively

    jshively OT Supporter

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    :bowdown::bowdown::bowdown::bowdown:
     
  8. jshively

    jshively OT Supporter

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    Played around last night with some leftovers and that website really kicks ass. Lot better increasing the aperture.

    [​IMG]
     
  9. mojito

    mojito New Member

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    Macro also has a 50/50 dof surrounding the plane of focus, where as non macros have 1/3 / 2/3 infront/behind the plane of focus
     

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