[LargeFormat] a gritty day

[Les Newcomer]

And that would be just to make the mould to inject the optical plastic!

I think this thread started with ground glass for Speed Graphics and if 
you want to use one for a  Speed you have to be a little careful where you 
put it.

Most Anniversaries and Some Pacemaker Speeds did use fresnel or "Ektalite 
Field lenses" as Graflex called them.  The ground glass on a Speed is 
loaded from the back, and if you installed a fresnel where there wasn't 
one, you'll shift the ground glass out of position the thickness of the 
fresnel.

On Tuesday, January 21, 2003, at 01:28 PM, Vincent Dobson wrote:

> hmm, The material the man is made of is from various keys on~~~~~~~~~ 
> oops,
> I guess you mean the fresnels?  The ones I have are made from a very hard
> plastic, but this would not be a do it yourself project.  It takes a very
> precision and expensive machine - think optical grade lathe and cost mid 
> 5
> to 6 figures I think.
>
>
>
> Vince Dobson
> Visions In Nature
> www.VisionsInNature.com
>
>
>
> -----Original Message-----
> From: largeformat-admin@f32.net [mailto:largeformat-admin@f32.net]On
> Behalf Of philip.lambert
> Sent: Tuesday, January 21, 2003 4:18 PM
> To: largeformat@f32.net
> Subject: Re: [LargeFormat] a gritty day
>
>
>
> ---
> From: "Vincent Dobson" <manitec@bellsouth.net>
> To: <largeformat@f32.net>
> Sent: Tuesday, January 21, 2003 7:52 PM
> Subject: RE: [LargeFormat] a gritty day
>
>
>> Very precise circular strokes. :)~~/~~~~!<
>
>
> Pardon me  -Is that a diagram or an oriental language?  And from what
> material
> do you make them?  PL
>
>
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