This sounds as though there may be a tradeoff between fineness of the
groundglass and brightness of the image. Maybe it would make sense to put
about a 10 to 15 mm spot of very fine grind or etching at the center to use
for focusing, and surround it with a coaser grind for a brighter image...RKS
>From: "Philip J. McCourt" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: Re: [Cameramakers] Making ground glass
>Date: Mon, 02 Jul 2001 17:16:57 -0400
>
>
>
>PhilSan wrote:
>
> > I will take a pc of glass into work Monday and try sandblasting it with
>fine
> > glass shot and see what it looks like. If all goes well I'll report back
>to
> > the list monday evening as to what it looks like. If it turns out good
>I will
> > post a picture of it on my web site as soon as possible.
> >
> > Phil McCourt
> >
> > www.philsan.com
> >
> > _______________________________________________
> > Cameramakers mailing list
> > [EMAIL PROTECTED]
> > http://rmp.opusis.com/mailman/listinfo/cameramakers
>
>Hello All,
>I sandblasted a couple pc's of glass at work today and installed it in the
>8x10
>right away. The image is a lot brighter as compared to the acid etched
>glass that
>I had in it. The only thing that is throwing me off is the sandblasted
>glass has a
>more textured surface that shows when you look at the glass with a loupe.
>Shouldn't be a problem because the image is so much brighter.
>
>I had trouble seeing the image while stopped down to f45 on the acid glass.
>I am
>able to see the image much better on the sandblasted glass while stopped
>down. I
>can even see the image without the focusing cloth while at f45. My wife
>spotted
>the difference as soon as she looked at the glass.
>
>Needless to say I am going to stay with the sandblasted glass, can't wait
>to do a
>little practising with the new glass.
>
>Phil McCourt
>
>www.philsan.com
>
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