The "Legendary Macro Lens" that made Tamron famous. Tamron SP 90mm F2.5 TELE MACRO BBAR MC (52B) This is the first-generation SP 90mm F/2.5, Nikon Ai mount. Also known as the "Portrait Macro," it's a medium telephoto lens that can also be used for portrait photography. It generally uses a modified Gauss-type optical system, known for its soft rendering. It's a compact and versatile lens, suitable for both medium telephoto and macro photography, making it easy to use. 《 Soft bokeh, sharp three-dimensional rendering 》This macro lens is suitable for general photography and portraits. The camera listed on Mercari was shot with the SP90. A 90mm medium telephoto lens depicts the natural form as seen by the human eye better than a standard lens. If you're photographing flowers, insects, or still life, a 60mm-90mm macro lens will give you the best performance. The first "Legendary Macro Lens" has a 9-blade circular aperture, so the aperture shape doesn't appear in the background even when stopped down, preventing the background from becoming distracting in macro photography. Although 46 years have passed since its release in 1979, I own several of the same lens, so this lens is in almost unused condition and is beautiful. The body and optics are also clean, with almost no scratches, mold, or dust. The aperture and helicoid operation are also good. Front and rear caps and a lens case are included. This is a lens that macro lens enthusiasts should definitely consider. Thank you for your consideration. Size... Nikon F mount Focal length... 71-150mm Open F value... 2.1-2.8