Infrared Photography Competition

Discussion in 'Digital Photography' started by Wayne J. Cosshall, Dec 5, 2006.

  1. Hi All,

    DIMi is running an infrared photography competition sponsored by
    MaxMax.com with monthly IR filter prizes and a grand
    prize of a digital camera conversion to IR mode, worth US$450. Details:
    <http://www.dimagemaker.com/comps/maxmax2006/maxmaxcomp.php>
    or
    <http://www.dimagemaker.com/competitions.php>

    Cheers,

    Wayne

    Wayne J. Cosshall
    Publisher, The Digital ImageMaker, http://www.dimagemaker.com/
    Blog http://www.digitalimagemakerworld.com/
    Publisher, Experimental Digital Photography http://
    www.experimentaldigitalphotography.com
    Workshops and seminars: http://www.thedigitalimagemaker.com/
    Personal art site http://www.artinyourface.com/
     
    Wayne J. Cosshall, Dec 5, 2006
    #1
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  2. DIMi is running an infrared photography competition sponsored by
    Erm, presumably you need an IR camera in order to take part in the
    competition, and so the grand prize would, kind of by definition, be
    worthless to its winner?
     
    Derek Fountain, Dec 5, 2006
    #2
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  3. Wayne J. Cosshall

    Bill Again Guest

    Not necessarily so. Many digital cameras can take IR pictures using the
    relevant filters. You can check if your digital camera can detect IR light
    by shining the TV remote towards the camera lens. When the remote is "on"
    you should see the glow from the sender when you look at it through the VF.
    However, a specialist IR conversion unit or dedicated camera would be quite
    a bonus.

    Bill
     
    Bill Again, Dec 5, 2006
    #3
  4. With a DSLR????
     
    Joseph Meehan, Dec 5, 2006
    #4
  5. No. Most digital cameras can - to a varying degree - take IR photos.
    I maintain a webpage listing some of these here:
    http://hannemyr.com/photo/ir.html
    I know Wayne J. Cosshall has a similar list on his web site.

    Of course a converted camera is simpler and more convenient to
    use, but most digital cameras will do for IR.
     
    Gisle Hannemyr, Dec 5, 2006
    #5
  6. Of course not - the way Bill Again describes the test only works
    if the camera has an EVF.

    But you can do the same test with a DSLR by taking a photograph
    of a tv-remote while somebody presses a button on it that makes
    it emit IR. When you review the image on the review screen,
    you'll see the IR glow described.
     
    Gisle Hannemyr, Dec 5, 2006
    #6
  7. Wayne J. Cosshall

    Dave Guest

    Thanks Wayne but the Terms and Conditions seem to assume that the
    world ends at the borders of the USA. I couldn't see any mention of
    place of residence at all.

    Dave.
    <http://www.henniker.org.uk> 3000 photos especially
    Edinburgh & Scotland. + 3D rendered art, old ads etc.
    Délété david for email; watch the spam filters.
     
    Dave, Dec 5, 2006
    #7
  8. Hi Dave,

    I'd don't see how you imply that it is US centric. The only US mention
    in the terms and conditions is the one about date definitions of the end
    of the month. I picked US Pacific time because it is about the last time
    zone from which I get entries before the dateline and just in case of
    dispute I had to pick some point. DIMi is truly international. I'm in
    Australia, the site is hosted in Texas (servers are bigger in Texas :)
    and I get entries from all over the world.

    People do have to email with their entry their address so we can
    organise for prizes to be sent.

    Cheers,

    Wayne
     
    Wayne J. Cosshall, Dec 5, 2006
    #8
  9. Hi Gang,

    Yup, as Gisle said, his site and mine have lists of cameras that work.
    In fact since I started testing for IR ability I have not found one
    digital camera. from a compact that you have to hold the IR filter over
    the lens to a dSLR that could not take some lovely shots in IR. Have a
    look at the examples on Gisle's site or the IR section on mine:
    <http://www.dimagemaker.com/specials/digitalir/digitalir.php>
    for articles on how it works, what you need and lots of examples from a
    list of 22 cameras (currently).

    Cheers,

    Wayne
     
    Wayne J. Cosshall, Dec 5, 2006
    #9
  10. That is not IR Photography. There is a big difference between using a
    filter and using the film.
     
    Pierre J. Proudhon, Dec 5, 2006
    #10
  11. Wayne J. Cosshall

    Bill Again Guest

    Maybe so. But if all you have available is film then I guess that you just
    have to put up with it.

    Bill Again < that's torn it >
     
    Bill Again, Dec 5, 2006
    #11
  12. Uh, what? If you mean simulating IR in software "filters," that's one
    thing. Otherwise, actual IR photons don't care what kind of sensor they
    hit, whether it's an electronic array or film.

    --
    It Came From Corry Lee Smith's Unclaimed Mysteries.
    http://www.unclaimedmysteries.net

    "Being an Auburn fan explains a lot about what is wrong with you,
    Unclaimed ... You didn't chose to address any of my post except this
    last little piece where I ridiculing you for being an idiot." - "Altie"
    on rec.sport.football.college, 2006
     
    Unclaimed Mysteries, Dec 5, 2006
    #12
  13. Unclaimed Mysteries
    The results are different if you spent any time using IR film. All
    Infrared film is sensitive to both some Infrared and visible light.

    Digital IR photography typically relies on reflected NIR from sources
    like the sun and incandescent lamps. Digital camera sensors based on
    silicon are not sensitive to the far (thermal) IR wavelengths (typically
    3.0µ and longer) emitted by objects at room to body temperatures. Heat
    leaks from houses aren't visible in the NIR, and people, animals and
    other objects at room to body temperatures don't glow in the NIR any
    more than they do in visible light. To photograph them in the dark, you
    have to provide proper NIR illumination using a suitably equipped camera
    like the Sony DSC-F7x7 or an external NIR-only flash with no filter.

    I can go on but you bore me.
     
    Pierre J. Proudhon, Dec 6, 2006
    #13
  14. Wayne J. Cosshall

    ASAAR Guest

    That's a neat and useful trick that works with my Sony IR remote.
    But an EVF isn't required, since the blast of IR shows up nicely on
    the LCD display of Canon's A620 which has an optical viewfinder.
    Also, there may be several DSLRs that can also detect IR without
    having to take a picture. These are the ones that offer live,
    real-time viewing on their LCD displays, and are manufactured by
    Olympus, Panasonic and Leica.
     
    ASAAR, Dec 6, 2006
    #14
  15. The fact that the results are different does not make one more valid
    than the other. Digital sensors don't have the same halation of many IR
    films, so the results look a bit different, that's all.

    What you then say about digital IR also applies to film IR, since both
    rely on reflected NIR. IR film also does not have sensitivity beyond the
    NIR, typically cutting off before 1000nm, so I don't get the point you
    are trying to make.

    Cheers,

    Wayne
     
    Wayne J. Cosshall, Dec 6, 2006
    #15
  16. No. But they are different. That was my point. Yawn.
     
    Pierre J. Proudhon, Dec 6, 2006
    #16
  17. Wayne J. Cosshall

    Frank ess Guest

    What it means, this "Yawn"?
     
    Frank ess, Dec 6, 2006
    #17
  18. Wayne J. Cosshall

    ASAAR Guest

    Laying a trap for the deserving, eh?
     
    ASAAR, Dec 6, 2006
    #18
  19. Wayne J. Cosshall

    ASAAR Guest

    That's a neat and useful trick that works with my Sony IR remote.
    But an EVF isn't required, since the blast of IR shows up nicely on
    the LCD display of Canon's A620 which has an optical viewfinder.
    Also, there may be several DSLRs that can also detect IR without
    having to take a picture. These are the ones that offer live,
    real-time viewing on their LCD displays, and are manufactured by
    Olympus, Panasonic and Leica.
     
    ASAAR, Dec 6, 2006
    #19
  20. Pierre J. Proudhon was strip-searched in Waverly, AL for writing in part:
    Many of us are already well aware that:

    1) a silicon detector needs refrigeration to effectively image IR beyond
    near-IR.

    2) near-IR photography relies heavily upon primary illumination from a
    strong source such as the Sun.

    3) an 89B-ish filter with any digital camera, converted or not, is
    unlikely to be used in thermography.

    ....
    MISSION ACCOMPLISHED.
     
    Unclaimed Mysteries, Dec 6, 2006
    #20
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