A medium telephoto prime lens with an extremely large apertureBeautiful, large bokeh of the highest levelThe most notable feature is its extremely large bokeh. The large bokeh surpasses the existing Sigma 135mm F1.8 Dg Hsm | Art, and even the "bokeh master" Sigma 105mm F1.4 Dg Hsm | Art, and enables new forms of expression.a focal length ideal for impressive portraitsThe 135mm F1.4 Dg | Art is the world's first full-frame interchangeable autofocus lens with a 135mm focus length to achieve an aperture of F1.4. The large bokeh produced by the brightest 135mm lens ever allows for impressive portraits that make the subject stand out. The lens also gives a compression effect, characteristic of proper telephoto lenses, enhancing the composition by making the subject stand out, making it ideal for portrait photographers aiming to take their work to next level.