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Thread: Harman Direct Positive Images

  1. #531

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    Re: Harman Direct Positive Images

    Click image for larger version. 

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    Here's one from Worldwide Pinhole Photography Day back in 2012, shot on a Zero Image 4x5 pinhole camera. I don't remember the exposure but it was at least 60 seconds.

  2. #532
    Tin Can's Avatar
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    Re: Harman Direct Positive Images

    Yesterday, I found my few sheets of 11X14 RC DP which I don't think is sold in USA anymore

    I am going to cut a sheet down to 8 4X5 and hope I do better than some years ago...

    Thanks for all the tips!
    sin eater

  3. #533

    Re: Harman Direct Positive Images

    Quote Originally Posted by Pedro_fiz View Post
    I am using two techniques:
    - Photo to the sky (when is cloudy), unfocusing as much as possible and compensating -5 steps of light.
    - Photo to a white paper sheet, unfocusing as much as possible and compensating -5 steps of light
    For this last photo I have used the second one
    For example, does it mean that I need to measure the sky with an exposure meter and then shoot -5 stops from this exposure?
    Then measure the shadow, set this shadow to Zone III, and shoot. is this right?
    Chamonix 45N-2, Chamonix 45H-1

  4. #534

    Join Date
    Aug 2019
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    Harman Direct Positive Images

    Quote Originally Posted by younghoon Kil View Post
    For example, does it mean that I need to measure the sky with an exposure meter and then shoot -5 stops from this exposure?
    Then measure the shadow, set this shadow to Zone III, and shoot. is this right?
    Yes, this is the method I am using. Don,t forget to calibrate the ISO...

  5. #535

    Re: Harman Direct Positive Images

    The ISO speed test, I'll need the first few tests (ISO 6 ~ 3 ~ 1.6).

    On a cloudless day, can I measure white paper sheet(or white translucent plastic) in front of the exposure meter and then -5 stop?
    (I mainly photograph architecture or scenery.)

    Thank you for your explanation.
    Chamonix 45N-2, Chamonix 45H-1

  6. #536

    Join Date
    Aug 2019
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    81

    Harman Direct Positive Images

    Quote Originally Posted by younghoon Kil View Post
    The ISO speed test, I'll need the first few tests (ISO 6 ~ 3 ~ 1.6).

    On a cloudless day, can I measure white paper sheet(or white translucent plastic) in front of the exposure meter and then -5 stop?
    (I mainly photograph architecture or scenery.)

    Thank you for your explanation.
    Use ISO 5 as the first reference.
    I normally fix the white paper in a window (using paper any day sunny or cloudy is OK). Then I measure in front and then I correct -5 to preflash.

  7. #537

    Re: Harman Direct Positive Images

    I will try and report the results soon.
    Thank you again.

    p.s. I can use C1C Universal Lens Calibrator(white translucent plastic) or ExpoDisc White Balance Filter in the field. On a cloudless day, I'm going to measure this in front of the exposure meter.
    Chamonix 45N-2, Chamonix 45H-1

  8. #538

    Re: Harman Direct Positive Images

    Has anyone tried specifically controlling contrast with the developer as opposed to a preflash? I would think Selectol Soft would compensate for the contrast to a great degree. I'm planning on doing some experimentation so maybe I'll just report back.

  9. #539
    Mike in NY's Avatar
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    Sep 2012
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    Re: Harman Direct Positive Images

    15 minute exposure using a Harman Titan 4x5 pinhole camera and positive paper.



    Truck
    by Michael Stewart, on Flickr
    Last edited by Mike in NY; 19-Jan-2020 at 19:59.
    I dream in black and white.

  10. #540

    Re: Harman Direct Positive Images

    Nice picture!
    Did you take this picture after preflash?
    Chamonix 45N-2, Chamonix 45H-1

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