Film and Darkroom User
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Photo Details
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MickS

Friend
Registered: February 2010 Location: March Posts: 44

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Direct contact from 5x4 Ilford FP4+ to 5x4 Maco Genius Ortho to make a positive, which will, when I can get down to my chemicals, be used to make a 5x4 paper neg for salt printing, I'll probably have to make a new pos though, this has slipped in the masking frame.
Just a bit of interest, well, this is the discussion gallery:-)
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· Date: Mon, 1, March, 2010 · Views: 273 · Filesize: 330.9kb, 182.3kb · Dimensions: 750 x 600 ·
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Additional Info
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Keywords: slide, interpositive, alternative photography, river, canal, mill,
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Film make, size & rating:: Ilford FP4+
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Film developer & temp:: Rodinal 1:25 @ 20c
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Lens focal length, aperture & speed:: not recorded
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Tripod used Y/N:: y
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Paper:: film, Maco Genius
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Paper developer & temp:: Neutol @ 20c
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Author
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Barry
Administrator
Registered: August 2008 Location: London Posts: 926
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Mon, 1, March, 2010 4:53pm
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Never used paper negatives but I have made negatives by reversal. A long time ago I was shown how to do it by a photographer named Liam Lawless. He used an interesting technique for reducing contrast which tends to be a problem with ortho copy negatives. There is a brief description of his method here http://unblinkingeye.com/Articles/NbyR/nbyr.html
------------------------------ Regards
Barry
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MickS
Friend
Registered: February 2010 Location: March Posts: 44
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Mon, 1, March, 2010 6:07pm
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thanks Barry, I'll have a butchers at that when I've got a mo, One of the ways to get continuous tone is to use paper developer with ortho/lith films. Of course, when you're working from a B&W neg there is no red anyway, you're just copying the tone, just like photographic paper but a tad faster, about 25.
This slide should produce a reasonable paper neg for salt or egg albumen printing.
If you really want to replicate Fox Talbot's first neg/pos process, you need to coat a piece of writing paper with the salt/silver nitrate, expose it in a camera then use the neg to contact with another salt/silver nitrate soaked piece, I may give that a go one day:-)
best
Mick
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MickS
Friend
Registered: February 2010 Location: March Posts: 44
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Sun, 7, March, 2010 9:11pm
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Watcha Barry,
yep had a look at that site, I've seen it before, my brain ain't clever enough to follow it, perhaps when I have a bit more time:-)
best
Mick
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