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Thread: DOF calculator (ppc)

  1. #1

    Cool DOF calculator (ppc)

    Just wondering, is there a good Depth of Field Calculator for Pocket PC?

  2. #2

    Default

    Check out this freeware



    DOF v1.0
    Size: 69 KB
    Date: September 5, 2002
    Type: Freeware
    Requirements:
    Pocket PC with Windows CE 3.0
    Download:
    DOF.exe

    Author: Jonathan Sachs
    Home: http://www.dl-c.com/ppc.html
    Email: jsachs@dl-c.com

    Description:
    DOF is a program for photographers that computes depth of field of lens given its focal length, f stop, resolution and focus distance.
    It reports the near and far focus limits and the hyperfocal distance (the minimum distance you can focus at and still keep infinity in focus).

    Update Description:
    Increased range of f stops, film speeds, and exposures

  3. #3

    Default Re: DOF calculator (ppc)

    Originally posted by kree
    Just wondering, is there a good Depth of Field Calculator for Pocket PC?
    yup there is a model made by sharp for such calculation

    but not sure what the model name is

  4. #4

    Default

    tat free software mentioned above is only for pocket PC right ? any free software available for desktop ?

  5. #5

    Default

    I use f/Calc on my laptop as well as on my lab machines. There are 7 different "functions" on this calculator...

    (i) Field of View
    (ii) Angle of View
    (iii) Magnification
    (iv) Spot Meter
    (v) f Number
    (vi) Depth of Field
    (vii) Hyperfocal Distance

    Here a screen capture of this free software... I find it quite handy to have around.


  6. #6
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    Default

    The equations for the near and far depths of sharpness do not look too complicated. So, you can always compile a table or plot graphs for your camera's given circle of confusion and focus distance. Such a handy chart or plot is surely more handy than lugging a Palm Pilot? Kids nowadays are so spoiled, what do they know about pre-calculator days?

    Anyways, the equation for the hyperfocal distance, which is
    H = f^2/ac
    with f the focal length, a the aperture number, and c the circle of confusion. The equation for the far field of sharpness is
    F = s(H-f)/(H-s)
    with s the focus distance. The near field of sharpness is
    N = s(H-f)/(H+s-2f)
    For a given a, plot N and F vs. s on a graph. More handy to refer to than using a Palm Pilot!

  7. #7
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    Default

    Originally posted by ckhaos
    The equations for the near and far depths of sharpness do not look too complicated. So, you can always compile a table or plot graphs for your camera's given circle of confusion and focus distance. Such a handy chart or plot is surely more handy than lugging a Palm Pilot? Kids nowadays are so spoiled, what do they know about pre-calculator days?

    Anyways, the equation for the hyperfocal distance, which is
    H = f^2/ac
    with f the focal length, a the aperture number, and c the circle of confusion. The equation for the far field of sharpness is
    F = s(H-f)/(H-s)
    with s the focus distance. The near field of sharpness is
    N = s(H-f)/(H+s-2f)
    For a given a, plot N and F vs. s on a graph. More handy to refer to than using a Palm Pilot!
    If my lens do not indicate the value for circle of confusion, what is the general value to use?

  8. #8

    Default

    Hehe, OT
    but if anyone wants to software for use on a Sharp Zaurus, here's the one i using...

    http://cameraassistant.sourceforge.net/


  9. #9
    Moderator ziploc's Avatar
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    Default

    Are there any java (j2me) version that can run on nokia 6610/6100?

  10. #10
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    holland ave
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    Default

    Quote Originally Posted by ziploc
    Are there any java (j2me) version that can run on nokia 6610/6100?
    sounds gd if there is.. cos i dun hav a palm, and i can't lug my desktop ard... even if i can also cannot find so many electric socket... (pull out the lamp post wire from under the ground... )

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