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Thread: DOF table for 100mm f2.8 macro lens

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    DOF table for 100mm f2.8 macro lens

    I have been hunting for some time without success for a DOF chart for my 100mm EF F2.8 macro lens. Is there something so obvious as to why I can't find one? Does a prime lens have a fixed DOF???

    If someone can help I'd be most appreciative as I'm getting a bit tired of not being able to tell how much DOF I have at certain distances (depending on aperture of course).



    thanks
    Judy
    Canon 5DII, Tamron AF 28-300mm F/3.5-6.3, Canon EF 100mm f/2.8 Macro USM , Canon EF 50mm F1.4 USM, Lensbaby Sweet 35, 580EXII, Manfrotto Tripod, CS3 & LR5
    http://www.pbase.com/judyd

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    Judy, are you talking doF in doing macro or using the lens in say portraits or general use ?
    Darren
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    Try DOF Master google it, for dof field in availble shot before and after subject.

    (http://dofmaster.com/)
    They call me "Blue" it's a red head thing.
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    Quote Originally Posted by kiwi View Post
    Judy, are you talking doF in doing macro or using the lens in say portraits or general use ?
    Kiwi probably all of the above but yes particularly portraits and general use.

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    http://www.dofmaster.com/dofjs.html
    Put in the numbers... @10cm f/16 on a crop sensor the DoF is 0 (which is about what happens for macro)
    regards, Kym Gallery Honest & Direct Constructive Critique Appreciated! ©
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    Quote Originally Posted by Judyd View Post
    [I want to use the 100/2.8 macro for all purposes] . . . but yes particularly portraits and general use.

    For Portraits and General use, consider the Axiom that the DoF for any camera format, is constant for same Framing of the Subject when shot at the same Aperture.

    Framing of the Subject is also mentioned in Cine terms as "The Shot".

    This Axiom is particularly useful for Portraiture; but it can be applied for all Photography, especially if the Photographer can imagine a “standard person”, in, The Shot.

    Knowing the DoF for THREE different Framings (i.e. Head Shot; Half Shot; Full Length Shoot) and for THREE different Apertures (e.g. F/2.8; F/5.6; F/11) and both for each of TWO Camera Orientations (i.e. Landscape and Portrait) requires only two tables each of nine numbers to be remembered for any Camera Format.

    Knowing these two tables and sometimes a quick mental calculation for in-between apertures or framings, I have found, is much quicker than referring to DoF Tables for the majority of general shooting scenarios and practically all Portraiture shooting scenarios.


    WW

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    thanks for that William ... much appreciated

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    Quote Originally Posted by Roosta View Post
    Try DOF Master google it, for dof field in availble shot before and after subject.

    (http://dofmaster.com/)
    thanks for this Roosta - i'm looking forward to the Android version so i can download it to my smartphone.

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    If you want an Android DOF App try DOF Calc

    https://market.android.com/details?id=jds.dofcalc&hl=en

    It’s a free app with an excellent UI.
    "We wants it, we needs it. Must have the precious. They stole it from us. Sneaky little hobbitses. Wicked, tricksy, false!"

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