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  1. #21
    richard ide's Avatar
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    Peter,
    There should not be any serious difficulty. But why would it not be possible to use the same paper?
    Richard

    Why are there no speaker jacks on a stereo camera?

  2. #22
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    Quote Originally Posted by richard ide View Post
    Peter,
    There should not be any serious difficulty. But why would it not be possible to use the same paper?
    I was hoping to use AZO paper for the contact print, and I thought that AZO doesn't work all that well when projecting an enlargement onto it, hence the need to use another paper for the 35mm to 8x10 enlargement.

    regards
    Peter

  3. #23
    richard ide's Avatar
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    Sorry Peter,
    I meant that to just make a comparison of looks and quality, make a print from each negative on to the same paper. I have printed enlarged negatives on Azo but really just to see the results. I had an enlarger with a very bright (6000w) light source.
    Richard

    Why are there no speaker jacks on a stereo camera?

  4. #24
    Ian Leake's Avatar
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    This may be a dumb question, but how do you judge the correct exposure for the interpositive? Do people rely on test strips (which seems a big palaver to me), or could I just use an incident lightmeter?

  5. #25
    Akki14's Avatar
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    I treat it like I do paper so I make test strips. Because it's development by inspection and a judge&grab sort of thing, I can somewhat eyeball if I need more development as well as exposure in some cases.
    I think traditionally they say print the interpositive flat as far as contrast so you keep detail in the highlights and shadows.
    ~Heather
    oooh shiny!
    http://www.stargazy.org/

  6. #26

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    BPF18

    the BPF18 I believe from Bergger is excellant stuff....works like a charm...interneg is low contrast then you go for the throat with the neg....ortho film and the stuff from freestylee If one has a measley $400 then go to Peter's Valley this summer and take the platinum workshop from Tillman Crane...you will learn how to do this and so much more...a great teacher in a wonderful setting!!
    Best, Peter

  7. #27
    Jim Noel's Avatar
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    The enlarged negative may or may not produce the same print as the original. If that is the goal, it can be extremely close.However, my purpose is usually to make a negative of varying density to print with one of the alternative processes. These vary in contrast needs, and thus I may have 3 0r 4 negatives each with a different contrast range and Dmax.
    [FONT=Comic Sans MS]Films NOT Dead - Just getting fixed![/FONT]

  8. #28

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    Quote Originally Posted by Jim Noel View Post
    The enlarged negative may or may not produce the same print as the original. If that is the goal, it can be extremely close.However, my purpose is usually to make a negative of varying density to print with one of the alternative processes. These vary in contrast needs, and thus I may have 3 0r 4 negatives each with a different contrast range and Dmax.
    Yeah. What he said.
    I don't vary too much on the interpositive. As stated it should have a lower gamma, to retain all the details. Once you have a good interpositive, the fun starts. You can vary the contrast of the enlarged negative up, down, or sideways to conform to the medium onto which it will be contact printed.
    There would be no reason to contact onto B&W paper, so far as I see it. You may as well enlarge directly from the original negative. Therefore the enlarged negative will always produce a different result on a different emulsion.

    I too use test strips to determine the intepositive exposure. I enlarge onto a sheet of Efke 25 held in a film holder with the DS removed, and vary the aperture to give an exposure of 6-9 sec. I then give n-1 in HC110(b). No rocket science here.

  9. #29
    Akki14's Avatar
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    I'm digging up this thread again...

    Since you can use lith negatives to change contrast... has anyone done this with a difficult to print negative? I've found some negatives that scan into my computer at really high contrast but they're actually a bit weak even on grade5. Just wondering if I could rescue them if i printed them like I would my cyanotype enlarged negs but then contact printed to normal silver gelatin paper (hmmm)...
    ~Heather
    oooh shiny!
    http://www.stargazy.org/

  10. #30
    Ian Leake's Avatar
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    Quote Originally Posted by Akki14 View Post
    Since you can use lith negatives to change contrast... has anyone done this with a difficult to print negative? I've found some negatives that scan into my computer at really high contrast but they're actually a bit weak even on grade5. Just wondering if I could rescue them if i printed them like I would my cyanotype enlarged negs but then contact printed to normal silver gelatin paper (hmmm)...
    This is something I've been pondering too. Logically this must be possible but I haven't actually tried it yet...

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