[Cameramakers] JML lenses

[John Cremati]

I have a JML 6 1/4 inch f 8 process lens and a JML 8 1/4 f 8  process lens.. They both appear to be extreem wide angle lenses .. Does any one know anything about these lenses , what they will cover  and what type of lens configuration is in them?  The iris stops about 1/2 way with a maximum apeture of F8 ... Has anyone modified one of these lenses to open larger than f 8?  It looks as if there is room to even get to f4 John Cremati