Boasting outstanding sharpness and great IQ from edge to edge, the 135mm F1.8 Art lens enters the market as Sigma's new premiere mid-range telephoto prime lens. Ideal for events such as concerts, indoor sports, conferences and press events, the 1.8 F-stop delivers greater shallow depth of field and isolation of subjects. The outstanding compression effect makes it equally as powerful for up-close and full-length portraits.