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Thread: focus distance in EXIF?

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    Default focus distance in EXIF?

    Someone on some forum (can't remember which one!) mentioned that the EXIF data in an Olympus E-1 RAW or JPEG file included the focus distance.

    Is this true? I've poked and prodded with every EXIF info viewer I can find and cannot locate anything that looks like a focus distance.

    (I'm on Mac OS X so if there is a tool available that would let me see it, please mention that. No access to Windows systems here. ;-)

    thanks
    Godfrey

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    Cool Re: focus distance in EXIF?

    Quote Originally Posted by Godfrey View Post
    Someone on some forum (can't remember which one!) mentioned that the EXIF data in an Olympus E-1 RAW or JPEG file included the focus distance.

    Is this true? I've poked and prodded with every EXIF info viewer I can find and cannot locate anything that looks like a focus distance.

    (I'm on Mac OS X so if there is a tool available that would let me see it, please mention that. No access to Windows systems here. ;-)

    thanks
    Godfrey
    I believe the command line tool exiftool shows you the focus distance:
    http://owl.phy.queensu.ca/~phil/exiftool/

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    Default Re: focus distance in EXIF?

    Yes indeed, that does the trick! thanks

    Godfrey

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    Default Re: focus distance in EXIF?

    If I remember correctly when that issue first came up a few years ago, the E-1 focusing distance recorded in the EXIF data was usually at wide variance from reality, which may explain why Olympus never advertised the availability of that data. It'll be interesting to see what your experience is.
    Good shooting,
    English Bob

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    Default Re: focus distance in EXIF?

    Quote Originally Posted by E B View Post
    If I remember correctly when that issue first came up a few years ago, the E-1 focusing distance recorded in the EXIF data was usually at wide variance from reality, which may explain why Olympus never advertised the availability of that data. It'll be interesting to see what your experience is.
    I imagine that it could be inaccurate both due to the body and due to lens calibrations. I'm curious about it, that's all. I might do some testing to see what it records with the lenses I have at my disposal vs what I measure the distances to be.

    Godfrey

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    Default Re: focus distance in EXIF?

    I doubt if the focusing system was ever correlated to actual distances. There's no practical need for it to be, since it wasn't intended to be used as a range finder.
    Good shooting,
    English Bob

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