Harman Direct Positive Images

[mitch.goddard]

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.

[Tin Can]

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!

[younghoon Kil]

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?

[Pedro_fiz]

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...

[younghoon Kil]

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.

[Pedro_fiz]

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.

[younghoon Kil]

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.

[sperdynamite]

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.

[Mike in NY]

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



Truck by Michael Stewart, on Flickr

[younghoon Kil]

Nice picture!
Did you take this picture after preflash?