[pure-silver] Re: duplicate info
- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 24 Jun 2005 12:45:51 -0400
A few comments on copying prints. I've done quite a bit of this in the
past.
Many 35mm and MF enlargers provide the option of replacing the enlarger
module with a camera. This solves the problem of keeping the film plane
and the copy subject parallel. Several camera manufacturers like Pentax
made a tripod-like device which fit the lens and supported the camera
above the print. Lacking either of these, a couple of wooden chairs, a
piece of 2x4, a length of 1/4 inch coarse threaded rod, a large clamp,
and a wingnut can be used to hold the camera in position over the print.
Drill a hole through the 2x4 parallel to the long side to fit the rod.
Insert the rod through the 2x4 and into the tripod mount on the camera
and use the wing nut to fasten the other end. Clamp the 2x4 to one of
the chairs and allow the other end to rest on the other chair. If
available use a level to check the 2x4 after setup.
If the print is faded a blue filter will help restore lost detail. The
other possibility is to use an ortho film like Maco's. This, of course,
will also enhance any stains on the print. If the print is not faded
but is stained a filter matching the color of the stain will minimize
it. For example, for yellowed paper you would use a yellow filter.
Consider using a macro or enlarging lens with a bellows for a flat
field. If using a regular camera lens a small aperture will help with
field curvature.
A cable release is helpful to minimize camera shake. If the camera has
a mirror lockup feature this will help too. Using the self timer on the
camera can also help if you don't have a cable release.
Use a fine grain film. Extending development will help restore lost
contrast in the print.
A piece of cork board or similar material and push pins are helpful for
unmounted photos. Using glass to hold prints down usually causes
reflections.
Lights should be at approximately 45 degrees to the print. Getting even
coverage over the entire print is problematic. Metering helps. Four
incandescent bulbs or two fluorescent tubes are better than two
incandescent.
Jerry
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