IB/E Optics BavEyes boosters for fullframe and medium format lenses

IB/E Optics was responsible for the optic and mechanic design  of the  the IB(E speedbooster "BavEyes"  . IB(E designed several different systems to fit nearly all known brands in the market to speed up 24x36mm lenses as well as medium format lenses as Hasselblad.  So the L/R - Nex  title means Leica lenses in use with Sony NEX . A  Leica R 4,0  / 35 - 70 will become a  2,8 / 24,5 - 49 mm and delivers the same field of view on the SONY NEX camera as the original lens on a Leica Body.