In 1979, TAMRON unveiled its groundbreaking 90mm macro lens, SP 90mm F/2.5 (Model 52B). During that time,the use of macro lenses was mainly limited to the copying of documents. When photographers were clamoring for a mid-telephoto lens with a short MOD (Minimum Object Distance), TAMRON delivered a truly revolutionary product. The Model 52B combined macro functionality with stunning bokeh and exceptional image quality, making it a versatile choice for general photography. Nicknamed Tamukyu," a portmanteau of two Japanese words, it quickly gained acclaim, particularly among nature photographers and portrait enthusiasts.