.Viltrox has launched a new full-frame 40mm F2.5 autofocus prime lense for Sony E-mount mirrorless cameras. It coincides lens the company launched along with a Nikon Z-mount earlier this year.Optical designThe brand new Viltrox 40mm prime lens is made for full-frame cameras, yet you can easily still use it on APS-C sensors. However, on a plant sensor cam, it is going to have an equal focal duration of around 60mm. The lens is designed along with 10 aspects in 6 teams. These feature one extra-low diffusion (ED) factor, three high refractive mark (HUMAN RESOURCES) elements, and one aspherical element. Furthermore, the lense features a nano-coating. Viltrox claims this decreases ghosting as well as flare for more clear, extra contrast-rich images.Wide maximum apertureThe brand new Viltrox 40mm prime lens has an optimum eye of F2.5, which ought to offer really good low-light efficiency and make it much easier to attain a superficial intensity of field. The iris uses a 7-blade concept however, Viltrox claims that it still provides a "beautiful bokeh" in out-of-focus areas.AutofocusThe auto-focus unit on the brand-new Viltrox 40mm lense makes use of an STM (tipping motor). The company states this provides fast as well as peaceful auto-focus. Moreover, Viltrox claims the lens features marginal emphasis breathing, which is actually excellent for video recording make use of. Focus breathing takes place when the graphic size improvements a little as you pull concentration. The 40mm lens additionally sustains eye as well as skin AF modes on Sony cams. The minimum required focus span is only over 13 inches (0.34 meters). BuildThe new Viltrox 40mm prime lens is actually lightweight at merely 5.9 ounces (167 grams). It is actually additionally portable, assessing 2.4 inches (59.5 mm) in span and 2.6 ins (65 mm) in dimension. Even with its measurements, Viltrox says the lens has a strong construction for long-lasting durability. It also possesses a weather-resistant design along with an anti-fouling coating on the main glass. The filter dimension is actually 52 mm, and the lens features a small petal-style lense hood.What we thinkA 40mm lens is actually an underused focal span. It is actually thought about closer to how we observe the planet along with our eyes than a typical 50mm lense. A 40mm lense is actually likewise a wonderful all-round focal span. Viltrox's brand-new 40mm prime lens has a pretty wide max eye of F2.5, thus you are going to be able to obtain a superficial deepness of area when it's vast available. It will additionally do properly in reduced illumination. One of the greatest components of Viltrox's brand new lens is its own low cost. If you are trying to find a 40mm prime lense, the Viltrox is actually a fantastic finances choice to consider.AvailabilityThe new Viltrox AF 40mm F2.5 full-frame prime lens for Sony E-mount mirrorless cams is available right now. It retails for $168.