The 300mm F2.8 lens with a large aperture is a popular choice among professional photographers due to its excellent image quality and low f-stop number. With the idea of taking this specification to the next level with a powerful zoom function, Sigma developed the 120-300mm F2.8 zoom lens. Composing shots with conventional 300mm lenses can be challenging. At sporting events, stage performances, and other situations where changing positions is difficult, the desired shot is often lost when switching lenses. With a 120-300mm zoom lens with a large aperture (F2.8), most lens changes become unnecessary, allowing the photographer to adjust the zoom and easily achieve the desired composition. Even in the most challenging situations, this lens enables true photographic expression.