Realist Light Fall off in lenses

[P3D emdesher <emdesher@xxxxxxxxxxxxxxxxxxxx>]

On Sat, 11 Jan 1997, P3D Bob Howard wrote:

> RE: Mike wonders why some Realist f/3.5 seem to vignette at small 
> openings and others don't.  
When I was designing a new slide mount for the "Realist" format, some 
photographers urged an aperture with more squared off corners.  However, 
someone connected with the factory pointed out that some of the f3.5 
camera's were prone to vignetting.  That's why the Realist aluminum 
slide mounts have such rounded corners.  So apparently this was something
they were aware of, and the problem varied with the different lens sources. 
Dennis


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