[LargeFormat] Graflok ground glass

[Les Newcomer]

Part of the thinking that glass isn't just a piece of glass, is that it
SHOULD be the same thickness as the original. "or it won't be in the
same plane and it won't focus properly"

Well the ground side is place toward the camera and 99% of all cameras
I've seen, it's that face that registers the glass. Now you could start
talking about the refraction of the glass having an effect but I say
that amount is negated by the variances in the film holders.

One thing is true with Graphic cameras. Some came with fresnel lens and
some didn't  the Fresnel went in first and then the glass. If you take
out the fresnel or replace it with a modern one, it will change the
plane of the ground glass.  Also on those cameras that didn't have a
fresnel lens the frame was made thicker to compensate. If you add the
fresnel you will move the ground glass.


FlaFaces1@aol.com wrote:
> 
> Robert, Hello.  I have a similar situation.  I recently bought my 4x5 Graphic
> View.  the ground glass is there, both pieces.  Rule of thirds.   My ground
> glass, is broken, on the Right third...  I have a link for custom made ground
> glass.  He wants $223.00 US, for a stupid 4x5 piece of glass!   I have seen a
> couple on E-Bay, for $25 to $30, but not sure if they are compatitable,  a
> 4x5 inch of glass, is just a 4x5 inch piece of ground glass, right???  Can
> some expert guide us, to a good reputable sorce????   thanks, Don Mason
> 
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