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Thread: how to find hyperfocal length on my 17-55 F/2.8 lens

  1. #1

    Default how to find hyperfocal length on my 17-55 F/2.8 lens

    can anyone shed some light on this? can't seem to locate it, tks

    is there a focal length to hyperfocus at every F/stop?
    Leonard aka audibum
    Nikon D300|17-55 F2.8|50 F/1.4|SB-800|Fuji x-100| canon s95

  2. #2

    Default Re: how to find hyperfocal length on my 17-55 F/2.8 lens

    Quote Originally Posted by audibum View Post
    can anyone shed some light on this? can't seem to locate it, tks

    is there a focal length to hyperfocus at every F/stop?
    Your question should be: What is the hyperfocal distance for a given focal length and f/stop?

    The chart can be found here:
    http://www.dofmaster.com/charts.html

  3. #3

    Default Re: how to find hyperfocal length on my 17-55 F/2.8 lens

    You can't locate it because the hyperfocal distance varies with focal length.

    As such, it is difficult to include depth-of-field markings on a zoom lens, such as your 17-55mm.

  4. #4

    Default Re: how to find hyperfocal length on my 17-55 F/2.8 lens

    The rule of thumb is to focus 1/3 of the way into the scene. Yes, it's not 100% accurate but it's good enough, considering that you don't need to calculate anything.

  5. #5
    Senior Member zac08's Avatar
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    Default Re: how to find hyperfocal length on my 17-55 F/2.8 lens

    It also depends on which camera you're using. For Nikon and Fujifilm DSLRs, there is a table which I got from Nikonians webbie.

    Generally, if you're using a standard f11 then at :

    17mm - 1.3m
    20mm - 1.8m
    24mm - 2.5m
    28mm - 3.5m
    35mm - 5.4m

  6. #6

    Default Re: how to find hyperfocal length on my 17-55 F/2.8 lens

    tks for all your help, will go try it out...
    Leonard aka audibum
    Nikon D300|17-55 F2.8|50 F/1.4|SB-800|Fuji x-100| canon s95

  7. #7

    Default Re: how to find hyperfocal length on my 17-55 F/2.8 lens

    Er, quite easy to calculate actually.

    The formula to find Hyperfocal Distance is:

    Sq of Focal Length
    ------------------ (mm)
    CoC x Aperture

    where CoC (Circle of Confusion) for your D80 is 0.02, and Aperture is f/stop number.

    In the field, if your hp is without a calculator function, use Denosha's method which is fairly workable.

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