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Thread: QT Luong's visit to the 61st national park with LF camera

  1. #11
    Indiana, USA chassis's Avatar
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    Re: QT Luong's visit to the 61st national park with LF camera

    Congratulations QT. Indiana Dunes is in my neighborhood, so a visit is in order.

  2. #12
    Randy Moe's Avatar
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    Re: QT Luong's visit to the 61st national park with LF camera

    Some have heard of hidden danger in the Dunes area

    The Mystery of Why This Dangerous Sand Dune Swallowed a Boy

    Written by The Smithsonian

    Other less reliable sources abound

    I stopped climbing the Indiana Dunes long ago
    TIN CAN COLLEGE

  3. #13

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    Re: QT Luong's visit to the 61st national park with LF camera

    It looks some Astia was used for this job...

    This is treasured film !

  4. #14
    Founder QT Luong's Avatar
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    Re: QT Luong's visit to the 61st national park with LF camera

    Quote Originally Posted by Pere Casals View Post
    It looks some Astia was used for this job...

    This is treasured film !
    Indeed, but my 20th-century stock is becoming problematic. I opened a box of 8x10 Astia less than a year ago and cut 25 sheets, resulting in 50 5x7s. I used about two dozen to photograph Gateway Arch National Park, with good results, and the rest were immediately stored back into the freezer where they have stayed continuously until last month's trip to the Indiana Dunes. However, upon receiving my 5x7s from Indiana Dunes National Park back from the same lab as last year (Prauss Productions), this time there was a very noticeable magenta cast. I was able to correct it after scanning, but that frozen stored film degraded within a year of opening the box surprised and worried me.

    By the way, thank you everyone for the kind words!

  5. #15

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    Re: QT Luong's visit to the 61st national park with LF camera

    Quote Originally Posted by QT Luong View Post
    film degraded within a year of opening the box surprised and worried me.
    You mentioned that some time ago... interesting observation. Perhaps it is because of oxydation, IMHO it may be tested if by removing oxygen the keeping is good. Perhaps we have two ways, one is using a high vaccum pump and a vacuum bag sealer for food. Another way would be keeping the oppened bags inside tupperware and filling with Protectan gas, or Argon, or bare (flamable!) butane. Argon and butane are denser than air, so if some oxygen remained in the tupper it will be displaced up. With a lower vacuum food sealer we can apply vacuum, then filling with Protectant, and applying vacuum again, two or the cycles, and then sealing.

    Perhaps the straighter way would be keeping the slide film in a tupper and filling with Protectan, at least it should slowdown degradation.

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