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Thread: Why does the photog shoot at f/22 for such a small insect?

  1. #1

    Default Why does the photog shoot at f/22 for such a small insect?

    I was aware that the dragonfly is only 1mm thick if the camera is parallel to it's
    body, thus a f/4 may cover the full DOF for the insect with a very very blurred
    background. What is the purpose for f/22 in this case?
    http://www.naturephotosociety.org.sg...4a08309454.jpg

    http://www.naturephotosociety.org.sg...ID14/1752.html

  2. #2

    Lightbulb Re: Why does the photog shoot at f/22 for such a small insect?

    ask the photographer who shot it.

  3. #3
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    Default Re: Why does the photog shoot at f/22 for such a small insect?

    in macro photography the DOF is very shallow
    so in order to get more DOF F22 is used

  4. #4

    Lightbulb Re: Why does the photog shoot at f/22 for such a small insect?

    shooting macro at F4 is not the same as shooting at F4 non-macro. the distance one shoots at from the subject matters too.

    best to ask the photographer who shot it. hehe!

  5. #5

    Default Re: Why does the photog shoot at f/22 for such a small insect?

    As stated, the macro DOF is way shallower than those taken normally. Especially obvious in SLR cameras.

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    Default Re: Why does the photog shoot at f/22 for such a small insect?

    but it looks nice, isn't it?

  7. #7
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    Default Re: Why does the photog shoot at f/22 for such a small insect?

    Quote Originally Posted by dRebelXT
    I was aware that the dragonfly is only 1mm thick if the camera is parallel to it's
    body, thus a f/4 may cover the full DOF for the insect with a very very blurred
    background. What is the purpose for f/22 in this case?
    The photo was made using an electronic flash. At very short distances, it could be difficult to throttle the flash output power sufficiently, reuslting in overexposure when using large apertures.

    Increased depth of field also helps to compensate for small focusing errors - especially useful for handheld shots and potentially moving objects.

  8. #8

    Default Re: Why does the photog shoot at f/22 for such a small insect?

    iicc..we learn sth new daily ya....

  9. #9

    Default Re: Why does the photog shoot at f/22 for such a small insect?

    Quote Originally Posted by dRebelXT
    I was aware that the dragonfly is only 1mm thick if the camera is parallel to it's
    body, thus a f/4 may cover the full DOF for the insect with a very very blurred
    background. What is the purpose for f/22 in this case?
    http://www.naturephotosociety.org.sg...4a08309454.jpg

    http://www.naturephotosociety.org.sg...ID14/1752.html
    This insect is about 2cm long and to get full frame with macro lens, you need to use small aperture like f22 to get the whole insect in focus. In other word, all closeup and macro photography will result in shallow DOF, so got to smaller aperture. Yes you can use big aperture but you will see your object appears soft due to shallow DOF.

    You can try to take anything which is about 2cm big with full frame to check it out
    Last edited by megaweb; 10th November 2005 at 02:33 PM.
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