The dimensions of the Arri LPL are interesting. The LPL lens mount has a
Flange Focal Distance of only 44mm and a throat diameter of 62mm.
That should make it quite easy to fabricate adapters to allow the use of
a range of unmodified old 35mm stills lens on the Arri LF if that is
your inclination. Stock Leica R and manual Nikon lenses should work but
it would still be very difficult to use Canon EF mount lenses.
All the best
Steven Morton FRPS