14x17 Pinhole; Double-sided green latitude. Developed in D-23 1+3
https://live.staticflickr.com/65535/...1f3bc5a2_o.jpg1417 Pinhole Test Shot by Andrew O'Neill, on Flickr
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14x17 Pinhole; Double-sided green latitude. Developed in D-23 1+3
https://live.staticflickr.com/65535/...1f3bc5a2_o.jpg1417 Pinhole Test Shot by Andrew O'Neill, on Flickr
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Pinhole size and duration?
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Originally Posted by Andrew O'Neill
Pinhole size was about 1mm. Focal length was about 500mm. Exposure time was 25 minutes. I didn't bother with reciprocity correction as I didn't feel like standing there for an hour. Still turned out well.Quote:
Originally Posted by Tin Can
Thanks, I am not having luck with 1 mm pinhole, perhaps my duration is way too short
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Originally Posted by Andrew O'Neill
I'm using mr. pinhole. You can generate an f/stop and exposure chart there. https://www.mrpinhole.com/calcpinh.phpQuote:
Originally Posted by Tin Can
I use him constantlyQuote:
Originally Posted by Andrew O'Neill
I may have the wrong hole in my 1 mm
I am going to make my own pinholes shortly
Today three 18x24cm Sinar Norma Lisco holders arrived from Germany. These will hold 18x24cm Kodak Mammography film, going into my 8x10 Sinar Norma
XRAY is a good way to learn large format handling and procedures.
Perfect!
https://live.staticflickr.com/65535/...e492f045_z.jpgSinar Norma 18x24 Lisco Holders by Nokton48, on Flickr
Three additional original Sinar Norma era 18x24cm Lisco holders. They came from Germany good deal but no dark slides. Catlabs has replacements at what I thought was a fair price so now cleaning these up to use.
These will hold 18x24 Kodak single sided Mammography film. I have about 500 sheets in stock so set for a while. The 8x10 Norma grounglass is very accurately marked for use with these holders.
https://live.staticflickr.com/65535/...9bb6948f_z.jpgSinar Norma 18x24 Lisco Holders XRAY by Nokton48, on Flickr
As you can see the 18x24cm Mammo XRAY stock fits perfectly in the Norma holder. This will make nice size contact prints. I envision split printing these negs. I got the idea for a contact printing light source that works with the big Multigrade filters. the idea came from Tim Layton and I followed his lead. These negs could benefit from being split-filtered to really nail the tonality.
"Sam"
14x17 double-sided green. 355mm Meniscus lens with cardboard aperture of about f/11 @ about 1sec. D-23 1+3. 10:00 20C. Flat-bottomed tray with gentle agitation every minute.
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