DOF question

Discussion in 'Beyond the Basics' started by artcardprinter, Feb 19, 2010.

  1. artcardprinter

    artcardprinter TPF Noob!

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    I am sure that 1 of the many TPF pros will be able to answer this... what DOF AV setting do I use to achieve Infinity Focus with my canon eos rebel xsi? And what is your opinion on Black backdrop as opposed to White? Thanking in advance, Pat.:D
     
  2. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    I'll move this out of the digital section, as it has nothing to do with digital ;)

    The Depth of Field is a result of the physics of the set up...the size of the aperture, the focal length of the lens, the distance to the focus point/plane.

    Infinity focus is just the farthest focus setting on the lens. When set to infinity, anything past a certain distance will be in focus.

    I'd suggest reading up on Hyperfocal Distance.
    Hyperfocal Distance
    Hyperfocal distance - Wikipedia, the free encyclopedia


    Either one is OK, although some will say that they have both been 'done to death' and are thus not very creative.
     
  3. Christie Photo

    Christie Photo No longer a newbie, moving up!

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    Both are useful. A good place to start is to "key" your subject with the background. If you have a subject that is primarily deep, dark tones... shoot on black. (Low key)

    Or when you have a subject that is mostly white or very light tones... shoot on white. (High key)

    This doesn't mean that a subject that is "out of key" with the background will not be successful. But this is a good place to start.

    -Pete
     
  4. KmH

    KmH Helping photographers learn to fish Supporting Member

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    I couldn't decide, so I use middle gray.

    With the right exposure and lighting, I can make it either black, or white. With gels on the lights, I can make it just about any color I want.
     
    Last edited: Feb 22, 2010
  5. Mike_E

    Mike_E No longer a newbie, moving up!

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  6. Ejazzle

    Ejazzle TPF Noob!

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    this
     
  7. NateWagner

    NateWagner TPF Noob!

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    Ahh yes, reminds me of a strobist video I recently saw. He uses the middle gray as well, for the same reason.
     
  8. Christie Photo

    Christie Photo No longer a newbie, moving up!

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    OK... except when you need a sweep like when shooting full-length.

    It's really OK to have more than one roll of seamless.

    -Pete
     
  9. KmH

    KmH Helping photographers learn to fish Supporting Member

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    :lmao: Yep!
     

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