Satin Snow Ground Glass

Question for Richard Knoppow.

If one adds an available generic Fresnel lens, i.e., large plastic
reading magnifier, behind one's ground glass so as not to affect the
focus, what is the effect of neglecting to match the Fresnel
magnification/f.l. to the lens?

Is it just a matter of viewer convenience? It seems there are so many
issues with point of reference (i.e., sensitivity of view thru Fresnel
to being off-axis), so would a 'carelessly found' Fresnel add-on not
provide benefit?

I read an article that discussed the selection of Fresnel f.l. relative
to the lens, but people change lenses AND without a custom Fresnel
lens, there are few options for the experimenter.

Murray

Hi,

Where did you acquire the Satin Snow GG?

Regards,
Bogdan

tmk DeleteThis @earthlink.net wrote:
 > I am delighted with the Satin Snow product. I received my 11x14 ground
 > glass after a reasonable and expected wait. It is installed in my
 > Burke and James and functions just as I expected. If I wanted a
 > fresnel or a screen brightener, I would have bought a fresnel or a
 > screen brightener. I wanted ground glass and I got ground glass. I
 > intend to support honest and quality vendors like Satin Snow and SK
 > Grimes and a short list of others. You should too.
 > Tom Keenan
 >

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__________________________________________________________________
Bogdan Karasek
Montréal, Québec e-mail: bkarasek DeleteThis @videotron.ca
Canada

"Wovon man nicht sprechen kann, darüber muss man schweigen"
"What we cannot speak about we must pass over in silence"
Ludwig Wittgenstein
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