Ricoh GXR 35mm f/1.8 Macro patent PR admin 15 years ago Ricoh filed a patent application 2010-175627 (published August 12, 2010, filled January 27, 2009) in Japan for what appears to be a new 35mm f/1.8 Macro lens. focal length f=33.1mm aperture Fno=1.80 image circle 28.4mm macro 1:2 floating focus mechanism No related posts.