Re: Print Frame Glass Quality
TERRY KING (KINGNAPOLEONPHOTO@compuserve.com)
Fri, 03 Apr 1998 01:08:33 -0500
Message text written by INTERNET:Bob_Maxey@mtn.3com.com
>
Yes...but at a high cost. I required it for exposing materials used for a
photochemical milling application. When you talk about Optical Quality, you
must keep in mind that this term is often misused. My material cost me
about $600.00. This was because of its optical flatness and an almost
perfect surface.
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One manufacturer of enlargers used to buy his optical glass from the local
glass factors who just used to make sure that there were not any scratches
or bubbles in their standard plate glass.
Terry King