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  1. #21
    djkloss's Avatar
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    I'm going to try to make it. I just spent $350 on Efke IR Aura 120 after learning of the demise of Efke tonight. Really down. Hope you can cheer me up. I can bring my new 8x10!

  2. #22
    jp80874's Avatar
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    Happy to hear you will try to come. Bring the 8x10. Leave the downs.

    John
    "If you want to be famous, you must do something more badly than anybody in the entire world." Miroslav Tichı

  3. #23
    djkloss's Avatar
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    I just shot my first 6 sheets of the 8x10 Ilford FP4. Now I just have to figure out how to develop & print... by the end of Sept!

  4. #24
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    Quote Originally Posted by djkloss View Post
    I just shot my first 6 sheets of the 8x10 Ilford FP4. Now I just have to figure out how to develop & print... by the end of Sept!
    Looking forward to seeing them. You will make beautiful pictures with that camera.

    When you say figure out how to develop & print, is there a reason to do it differently than you develop and print other formats? You will do it beautifully. If not you will do it again, then beautifully.

    Dick Phillips, the builder of my cameras, told me that as the cameras got bigger you needed to add a bit of exposure beyond what the meter says to make up for all that light that got sucked up in the bellows. It has proved to be good advice.

    See you in a few weeks.

    John
    "If you want to be famous, you must do something more badly than anybody in the entire world." Miroslav Tichı

  5. #25
    djkloss's Avatar
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    Thanks I made a spreadsheet to calculate reciprocity and bellows ext factor. It came out to 20 secs instead of 1. 15" bellows draw and 1 second exp. 8 1/2" lens. Sound even remotely correct?

  6. #26
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    Quote Originally Posted by djkloss View Post
    Thanks I made a spreadsheet to calculate reciprocity and bellows ext factor. It came out to 20 secs instead of 1. 15" bellows draw and 1 second exp. 8 1/2" lens. Sound even remotely correct?
    Sounds about right, you've got nearly two stops of light loss due to bellows factor, bringing the exposure to 4 sec. then add in reciprocity. I'd say you've got all the information on the negative that you need.
    Co-Host of The Film Photography Podcast, the bi-monthly internet radio show all about film!

  7. #27
    jp80874's Avatar
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    Quote Originally Posted by djkloss View Post
    Thanks I made a spreadsheet to calculate reciprocity and bellows ext factor. It came out to 20 secs instead of 1. 15" bellows draw and 1 second exp. 8 1/2" lens. Sound even remotely correct?
    I know film is expensive, but an experiment you might want to try while you are starting out is to bracket two stops longer, then compare the negatives. I have been starting out for about eight years now and I really like the choices that produces.

    John
    "If you want to be famous, you must do something more badly than anybody in the entire world." Miroslav Tichı

  8. #28
    djkloss's Avatar
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    is there an app for this? I have an android.

  9. #29
    djkloss's Avatar
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    wow! they do! Kingsoft Office excel for android!

  10. #30
    Lee L's Avatar
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    This one gets good reviews. Haven't tried it myself. Bellows factor is just one small part of it.

    https://play.google.com/store/apps/d...ototools&hl=en

    ad supported free version and $2 for the ad free version.

    Will likely check it out myself.

    There are a number of spreadsheets around, and LibreOffice is in the works.

    Also check out The Photographers Ephemeris.

    Lee

    Quote Originally Posted by djkloss View Post
    is there an app for this? I have an android.

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