[pure-silver] Re: Light source vignette or hopefully avoiding it

On Friday 14 July 2006 11:02, Frank Filippone wrote:
> Yes, but.....
>
> You will have a possible issue where the 5x7 lower negative stage is
> located.  The aperture from a 5x7 MAY vignette here.


        Is there any way to figure this out? Short of buying the light source 
and 
trying I mean. Beseler manages to convert a 4x5 to 8x10 and the opening is 
bigger on my Elwood then on my Beseler. 

        Could I draw the cone of light the image forms? Using the formulas for 
focus 
to define the triangles? That makes sense doesn't it? It's then a simple math 
problem. At least if I looking at the problem correctly.

        Nick
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