The Viltrox AF 135mm F1.8 LAB is a professional-grade fast telephoto prime lens for Sony full-frame E-mount mirrorless cameras, featuring an ultra-bright f/1.8 aperture with a sophisticated optical design tuned for portrait and low-light photography. It is part of Viltrox's flagship LAB series, representing the brand's highest optical and build quality with autofocus support. The lens is designed to compete directly with native manufacturer telephoto primes.