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Thread: DOF on Compact Cam...

  1. #1
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    Default DOF on Compact Cam...

    What makes a lens or cam to have DOF which all slr/dslr have...

    and why compact cam cannot achieve this DOF except only when using in macro (near subject)...

    is it all about lens..???

    sorry...newbie here...

  2. #2
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    Default Re: DOF on Compact Cam...

    Quote Originally Posted by elmzarcega View Post
    What makes a lens or cam to have DOF which all slr/dslr have...

    and why compact cam cannot achieve this DOF except only when using in macro (near subject)...

    is it all about lens..???

    sorry...newbie here...
    yes... lens used on PnS (small sensor) are usually something like 8-24mm, but for dSLR to achieve that zoom, the lens would be about 24-70(1.5x crop), and on a 35mm full frame it will be 36-105.

  3. #3

    Default Re: DOF on Compact Cam...

    Yes, the focal length of the lens is the major factor affecting the DOF.

    The actual focal length of compact cameras are small. Typically the focal length is <30mm. E.g. a compact camera (1/2.5" sensor) with equivalent zoom of 28-100mm zoom has a lens of actual focal length of 4.6-16.8mm.


    You can read this article and play around with the DOF calculator.
    http://www.cambridgeincolour.com/tut...h-of-field.htm

    BC

  4. #4

    Default Re: DOF on Compact Cam...

    well my lame way is to use micro mode... to achieve DOF for compact as wat other had said it is the focal length that counts which is differnt form the usual length
    Last edited by compro_1975; 26th February 2007 at 07:38 PM.

  5. #5
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    Default Re: DOF on Compact Cam...

    Quote Originally Posted by compro_1975 View Post
    well my lame way is to use micro mode... to achieve DOF for compact as wat other had said it is the focal length that counts which is differnt form the usual length
    indeed...

  6. #6

    Default Re: DOF on Compact Cam...

    As we can see, DOF is affected by sensor size, focal length, aperture and shooting distance.

    Given the small sensor on compact cameras, you need to stand much further away at the same actual focal length if you want to get the same composition in your frame as a DSLR.

    Thus, on a compact camera, you either need to use very short actual focal length if stand near or stand far away if you use longer actual focal length for most of your shots. The result is a great depth of field and you won't be able to get the shallow DOF which a DSLR is capable of for the similar composition.

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