RE: [pinhole-discussion] fogging in half-cylinder cameras.

[Frans van Dijk]

Hi William,

For these purposes the black paint used for writing black-boards is ideal.
These days the writing boards are usually green, but the black paint is
still widely available in The Netherlands.It is intended to make the chalc
crayon leave behind a trace by its roughness and give maximum contrast by
not reflecting any light. What more can you ask for.

-Oorspronkelijk bericht-
Van: pinhole-discussion-admin@p at ???
[mailto:pinhole-discussion-admin@p at ???]Namens William Erickson
Verzonden: donderdag 11 juli 2002 13:47
Aan: ppinhole discussion
Onderwerp: [pinhole-discussion] fogging in half-cylinder cameras.


I have made a half cylinder camera for 8x10 negatives. I find that I have
far more trouble with fogging due to interior reflection than I have ever
seen with cylindrical cameras where the negative takes up only the back half
of the cylinder. In this camera, the angle of view approaches 180 degrees,
with the edges of the neg butted right up against the front of the camera. I
haven't had fully matte paper to use, and haven't tried film yet, but I
will. Has anyone used the polymax fine art paper that is double matte? I
sent for some. has anyone tried some sort of a baffle system that might
quench some of the random bouncing around of light?



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Re: [pinhole-discussion] fogging in half-cylinder cameras.

[William Erickson]

Thanks.
- Original Message -
From: Andy Schmitt aschm...@warwick.net
To: pinhole-discussion@p at ???
Sent: Thursday, July 11, 2002 12:08 PM
Subject: RE: [pinhole-discussion] fogging in half-cylinder cameras.


 The regular matte paper should solve it. Also make sure the back of the
 metal that you made the PH out of is covered. Glossy paper is a nightmare
in
 cylindrical cameras
 andy

 -Original Message-
 From: pinhole-discussion-admin@p at ???
 [mailto:pinhole-discussion-admin@p at ???]On Behalf Of William
 Erickson
 Sent: Thursday, July 11, 2002 7:47 AM
 To: ppinhole discussion
 Subject: [pinhole-discussion] fogging in half-cylinder cameras.


 I have made a half cylinder camera for 8x10 negatives. I find that I have
 far more trouble with fogging due to interior reflection than I have ever
 seen with cylindrical cameras where the negative takes up only the back
half
 of the cylinder. In this camera, the angle of view approaches 180 degrees,
 with the edges of the neg butted right up against the front of the camera.
I
 haven't had fully matte paper to use, and haven't tried film yet, but I
 will. Has anyone used the polymax fine art paper that is double matte? I
 sent for some. has anyone tried some sort of a baffle system that might
 quench some of the random bouncing around of light?



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 Post to the list as PLAIN TEXT only - no HTML
 Pinhole-Discussion mailing list
 Pinhole-Discussion@p at ???
 unsubscribe or change your account at
 http://www.???/discussion/


 ___
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 Pinhole-Discussion@p at ???
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 http://www.???/discussion/