Viltrox AF 40mm f/2.5 FE STM ED IF APSH Lens for Sony E-Mount, Black Review

The Viltrox AF 40mm f/2.5 FE is a compact autofocus prime for Sony E-mount full-frame cameras, priced at just $111. It sits in the budget-friendly end of the 35-50mm walk-around focal length range, offering autofocus and STM motor performance at a fraction of the cost of first-party Sony glass. The lens features ED glass to control chromatic aberration and an internal focusing design, paired with a 52mm filter thread that keeps it light and portable.

At this price point, the Viltrox 40mm f/2.5 targets creators looking for an affordable entry into fast primes without sacrificing autofocus or full-frame coverage. The 40mm focal length is versatile for everyday shooting, environmental portraits, and street photography. Viltrox has built a reputation for delivering usable third-party glass with decent optics and autofocus reliability, though build quality and edge sharpness typically trail premium alternatives. For Sony shooters on a tight budget who need a lightweight, everyday lens with autofocus, this represents a low-risk option to fill out a kit without major investment.