Re: Seitz Roundshot and QTVR technique

[Alan Zinn <azinn@xxxxxxxxxx>]

At 02:52 PM 11/5/1998 -0600, you wrote:
>Peter Lorber told me about how he got rid if the Newton ring problem with
>his Roundshot enlarger. He said that he rubbed corn starch on the glass.
>Don't ask me how or why it worked, but it solved the problem.
>
>What he told me was that he rubbed the dry corn starch powder on the glass
>and then remove as much as he could with a dry towel. May he was just
>telling me a story. But when he first used his Roundshot Enlarger the Newton
>ring problem was very obvious. Now he has no problem with it at all. Give it
>a try and let us know if it worked.
>

guys,
This technique works, I learned it from a large commercial photo shop. Use
talcum powder.  Don't rub it on!!  Turn the talc container on its side over
the glass and tap it with a pencil so that it poofs out and settles evenly
on the glass. The talcum is finer than fine grain and does not show up. 

Another solution would be to have a piece of anti-newton glass cut to fit
the scanner. Try Focal Point Photography.  I don't have their URL handy.

AZ
Lookaround Cameras are more fun.

New October Additions at:
http://www.keva.com/lookaround
http://www.geocities.com/SoHo/Gallery/8874

Also at Cafe Society Gallery:
http://www.curdev.hull.ac.uk/root/cafe/cafegal.htm