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Thread: 35mm and digital infrared

  1. #81
    Tin Can's Avatar
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    Dec 2011
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    15,308

    Re: 35mm and digital infrared

    I cannot find the D70, it's here somewhere. I will try with my D7000

    Ken Rockwell says fake it in PS. He also explains Infrared Film capture well.

    Infra-Red Infrared Photography

    Quote Originally Posted by malexand View Post
    The D70 is pretty easy to convert and you can find them used CHEAP - I did one earlier this spring. The great advantage of doing it internally is you can view through the lens normally. I replaced the internal IR cut-off filter with a Lee polyester 87 filter in about an hour if you include the 2 re-dos I had to do in order to get the ribbon cables seated properly....
    My example from the Smoky Mountains this summer. F8, 1/500
    Attachment 195291
    2022

  2. #82

    Join Date
    Dec 2010
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    Baltimore, Maryland, US
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    211

    Re: 35mm and digital infrared

    Don't you need to replace the IR blocking cover glass with something that has the same refractive index? Otherwise how can you make infinity, if your effective focal length is 2-4mm shorter?

  3. #83
    Bill
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    Oct 2017
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    Houston, TX
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    39

    Re: 35mm and digital infrared

    Infrared #1 by Bill, on Flickr

    Olympus EPL-1 Micro 4/3, 950nm

  4. #84

    Join Date
    May 2009
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    Vermont
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    188

    Re: 35mm and digital infrared

    A couple from my Leica M8 with a 25mm Canon one with 35 Summilux r72 filter
    Click image for larger version. 

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    Click image for larger version. 

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  5. #85

    Join Date
    Aug 2016
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    Scottsdale, AZ
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    Re: 35mm and digital infrared

    Quote Originally Posted by Will Frostmill View Post
    Don't you need to replace the IR blocking cover glass with something that has the same refractive index? Otherwise how can you make infinity, if your effective focal length is 2-4mm shorter?
    As is often the case, the answer to your question is "it depends."

    For example, when I converted my Samsung NX500 by removing the cover glass / hot filter / dust shaker mechanism, I knew I was only ever going to use adapted, manual-focus lenses with it, so it wasn't necessary for me to insure the camera could still autofocus NX-mount lenses, only that it could reach infinity focus with my adapted lenses.

    Fortunately, the adjustment range built into the sensor mounting bracket is sufficiently large that I was able to tweak its position after I removed the cover glass, et al such that my lenses will indeed focus at infinity without replacing it.

    Whether this method will also work with other camera / lens combos depends upon the other cameras and lenses.
    JG

    More of my photos can be seen at my photo-blog here: https://audiidudii.aminus3.com/

  6. #86

    Re: 35mm and digital infrared

    It's been awhile since I've posted any images, so here's an image from summer of 2018. Nikon F100, Nikkor 35-70mm lens with orange 16 filter, and FPP InfraChrome film.

    Click image for larger version. 

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    Last edited by MultiFormat Shooter; 2-Dec-2019 at 10:41. Reason: typographical error

  7. #87

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    Dec 2017
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    Northlake, TX
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    Re: 35mm and digital infrared

    Sony A7R converted to B/W IR and Nikkor 80-200/4 Ai-S


  8. #88

    Re: 35mm and digital infrared

    Quote Originally Posted by 6X17 Shooter View Post
    Sony A7R converted to B/W IR and Nikkor 80-200/4 Ai-S
    Nice! The sky looks quiet ominous along the horizon, like a major storm is brewing.

  9. #89

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    Dec 2017
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    Northlake, TX
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    65

    Re: 35mm and digital infrared

    Thank you. Yep...major storm was brewing but still had a few spots of sunlight hitting the trees. Managed to squeeze off a half dozen or so shots before I had to pack it in.

  10. #90

    Re: 35mm and digital infrared

    Very one thinks of landscapes when they think of IR but I really like it for portraits and people. The first is a portrait of my wife on 35mm Kodak High Speed IR. The 2nd & 3rd are with a Colari converted D3100 Nikon and the 4th is from a documentary series on tattoos. I felt IR gave a slightly different look due to IR’s ability to penetrate the outer layer of skin.

    I started shooting IR back in the 60’s before the days of high speed IR. The original film was slower than high speed but it could be loaded in the camera in daylight. Many years later Konica introduces a slow but excellent IR film in 120. Other makers have introduced IR films but I’ve not had great success with them.
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