Need Help to detect image manipulation

Discussion in 'Photography' started by dbcooper, Oct 26, 2005.

  1. dbcooper

    dbcooper Guest

    I am looking for ways to detect if digital images have been altered
    “photoshopped”. If anyone could direct me to a program or method to
    determine this it would be much appreciated.
    dbcooper, Oct 26, 2005
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  2. dbcooper


    No software. You need a trained eye
    DBLEXPOSURE, Oct 27, 2005
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  3. dbcooper

    Scott W Guest

    It depends in large part on how good the person is who is doing the
    Photoshop work. Photoshop leaves its mark on the exif data, which is
    pretty easy to edit back to make it look like it has not be edited. If
    you really got into it there is a lot of detail as to how a jpeg file
    is stored, it would be somewhat difficult for just anybody to exactly
    copy how a given camera saved the jpeg file.

    Raw files would be much harder to fake then jpeg, but not impossible.

    Of course almost any photo this is posted on the internet has been
    edited by resizing if nothing else.

    What is the source of the photos that you are worried about, if you
    don't mind me asking?

    Scott W, Oct 27, 2005
  4. dbcooper

    dbcooper Guest

    it has to do with an internet purchase, where the picture of an item we
    purchased did not truly represent the piece. To say the least the photo was
    flattering the condition of the item. Was curious to see if the original
    photo had been more than resized or color enhanced. Thanks again for your
    all input.
    dbcooper, Oct 27, 2005
  5. dbcooper

    Scott W Guest

    The problem then is that the photo was edited but it would be very hard
    to tell just how much it was edited.

    Scott W, Oct 27, 2005
  6. dbcooper


    Never, Never judge a product by the photo. Most sites tell you that the
    product may not exactly match the photo. The food you order at Denny's
    never looks like the photo in the menu.

    almost all product shots are manipulated.
    DBLEXPOSURE, Oct 27, 2005
  7. dbcooper

    Hunt Guest

    Exactly. The tenent of advertising photography is to flatter the product as
    much as is possible. This might just be the lighting, or the selection of
    lens to visually distort length, etc. I may also go into image manipulation.
    In the days before digital, it was common to "pump up" colors with Flexichrome
    dyes. Once one got into "airbrushing" it was more graphic art, than
    photography. As one who has spent half a lifetime photographing computer
    boxes, to make them look sexy, or tiny resort rooms to make them look spacious
    and bright, its far more than a color/contrast tweak.

    Hunt, Oct 28, 2005
  8. dbcooper

    Whiskers Guest

    The easiest way to produce a misleading photo for an advertisement, is to
    photograph something that isn't the item being offered for sale. No techy
    tricks, just plain old subterfuge and deceit - or laziness, by 'borrowing' a
    picture of 'something similar' from 'somewhere else'.
    Whiskers, Oct 31, 2005
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