From: Monnoyer Philippe (monnoyer@imec.be)
Date: 01/21/03-09:43:50 AM Z
Dear Christina and others,
I am studying what direct duplicating films are still on the market and I tests them for sensitometry. I keep those which could be OK (true halftone range, high and tunable density range) for us in alt phot.
I have now two candidates. I will publish results soon by a way or another. I might consider having a batch made for very large format and sell it. Up to know a first estimate of the future cost is 50 USD/EUR per sq meter, 50 sheets pack, 50x70 cm sheets, shipping not included.
Would people be interested in such a film (thick polyester base) ? Any input is welcome.
Cheers,
Philippe
|-----Original Message-----
|From: Christina Z. Anderson [mailto:zphoto@montana.net]
|Sent: Tuesday, January 21, 2003 16:31
|To: Alt Photo List
|Subject: making enlarged negatives
|
|
|Hi List!
| Can anyone give me a ballpark time of exposures to test
|strip at, for a
|normal density 35mm negative onto FP4 (125) 4x5 film mostly
|full frame under
|a condenser enlarger with an 80mm lens, lens set at around
|5.6? I've got
|some past mathematical formula where you multiply the f stop and
|magnification etc etc but would much prefer someone's
|experience of what
|they start test exposing their film at. Is it seconds, or tenths of
|seconds, for instance? Since this is an interpositive that
|will then be
|reexposed onto 8x10 Bergger ortho film, I want it to be a bit
|overexposed
|and underdeveloped...I always used to use Kodak SO132 film,
|and now that is
|discontinued and I am not aware of any other direct dupe
|film--if someone
|knows of one, let me know, too.
|Chris
|
|
|
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