Interesting questions, Paul. Answering in reverse order: POP or std - The paper requires standard development processing, you cannot just watch the image form as it is exposed to light (POP). The happy thing is that it works with standard paper development chemistry and processing techniques.
Contrast - The best I can answer is "I don't know." I've never used this paper before so have no experience with it in a darkroom situation using standard tray development. I estimated sensitivity at ISO 6, made exposures at ISO 6 and ISO 3 as a test. My paper developer was so far out of date (which I didn't know until I started mixing it) that I felt the results were going to fall way off the curve ... I mixed it up at 1:31 dilution and gave the paper 12 minutes of development time (standard would be 1:9 or 1:14 @ ~2 minutes). The resulting paper image was very, very flat, with the ISO 3 images showing more useable tonal scale. I could probably have gone to ISO 1.5 and 20 minutes processing time with that defective soup. With the Hasselblad's 907x/CFVII 50c sensor's great tonal depth, I was able to get a pretty decent range out of the originals that matched what I had in mind when making the exposures, but it was a bit more work than my usual film captures. I need to experiment with the paper some more. The simple thing to do would be to get a cheap 4x5in field camera and some film holders, that would save a huge amount of time in cutting down the paper sheets and fitting into the fussy Mamiya Press 23 film holders. :) G -- Godfrey DiGiorgi - [email protected] > On Jun 21, 2021, at 9:25 AM, Paul Sorenson <[email protected]> wrote: > > Interesting. Is the paper that contrasty or is that the way you chose to > post process the digital version. Can that paper also be used as POP or does > it require the standard development process? > > -p > >> On 6/21/2021 10:17 AM, Godfrey DiGiorgi wrote: >> My experiment with Ilford Harmann Direct Positive paper as a sheet film, >> first results: >> >> https://flic.kr/p/2m6URSN :: Birdhouse - Santa Clara 2021 >> https://flic.kr/p/2m6TjF5 :: Locked Gate - Santa Clara 2021 >> >> technical info: >> - Mamiya Press 23 Super, sheet film back >> - Sekor 65mm f/5.6 lens >> - Ilford Harmann Direct Positive paper in Ilford Multigrade developer >> - ISO 3 @ f/11 @ 1 second >> - scanned with Hasselblad 907x + Leitz Macro-Elmar 100mm f/4 >> >> I like the feel of the results, but dang! it's one heck of a PITA process … >> Probably only an "once in a while" thing to do as a result. >> >> Enjoy! >> G -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to [email protected] to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
