Ronian publishes a new book, Multiple-Field Multispectral Imaging Using Wide-Angle Lenses. Written for researchers, optical designers, and optical engineers, this short book shares Ronian's investigations into the design of multispectral imaging systems that do not suffer from "spectral shifts" due to thin-film filters used at non-normal angles of incidence. Click HERE to preview first pages! Click HERE to buy it on Amazon!