.Viltrox has introduced a brand-new full-frame 40mm F2.5 autofocus prime lense for Sony E-mount mirrorless video cameras. It coincides lense the company launched with a Nikon Z-mount earlier this year.Optical designThe brand-new Viltrox 40mm prime lense is actually developed for full-frame video cameras, yet you can easily still utilize it on APS-C sensing units. Nonetheless, on a crop sensing unit video camera, it will have an equal focal span of around 60mm. The lens is designed along with 10 factors in six groups. These consist of one extra-low diffusion (ED) aspect, 3 high refractive index (HR) factors, and one aspherical aspect. In addition, the lens includes a nano-coating. Viltrox says this lessens ghosting as well as dazzle for clearer, a lot more contrast-rich images.Wide maximum apertureThe new Viltrox 40mm prime lense has a max eye of F2.5, which ought to give really good low-light efficiency and also produce it much easier to obtain a shallow deepness of area. The eye uses a 7-blade design however, Viltrox professes that it still provides a "wonderful bokeh" in out-of-focus areas.AutofocusThe auto-focus unit on the brand-new Viltrox 40mm lens uses an STM (tipping electric motor). The provider says this delivers fast as well as peaceful auto-focus. Additionally, Viltrox claims the lense presents minimal focus breathing, which is fantastic for video use. Focus breathing happens when the picture dimension modifications a little as you pull focus. The 40mm lens likewise sustains eye and also face AF methods on Sony electronic cameras. The minimum required focus proximity is simply over thirteen inches (0.34 gauges). BuildThe brand-new Viltrox 40mm prime lens is lightweight at only 5.9 ounces (167 grams). It is actually likewise compact, determining 2.4 inches (59.5 mm) in duration as well as 2.6 inches (65 mm) in diameter. In spite of its own measurements, Viltrox mentions the lense possesses a strong development for long-lasting toughness. It likewise has a weather-resistant layout with an anti-fouling finishing on the main glass. The filter size is actually 52 mm, as well as the lens possesses a tiny petal-style lense hood.What our experts thinkA 40mm lense is an underused central duration. It's taken into consideration closer to just how we see the planet with our eyes than a basic 50mm lens. A 40mm lense is likewise a fantastic all-round central length. Viltrox's new 40mm prime lens possesses a pretty broad optimum eye of F2.5, thus you will definitely manage to obtain a shallow depth of industry when it is actually broad available. It will definitely also perform properly in low lighting. Among the greatest features of Viltrox's new lense is its small cost. If you are actually trying to find a 40mm prime lense, the Viltrox is a great budget possibility to consider.AvailabilityThe brand-new Viltrox AF 40mm F2.5 full-frame prime lens for Sony E-mount mirrorless electronic cameras is actually accessible currently. It retails for $168.