.Viltrox has introduced a new full-frame 40mm F2.5 autofocus prime lens for Sony E-mount mirrorless video cameras. It's the same lens the company released with a Nikon Z-mount earlier this year.Optical designThe brand new Viltrox 40mm prime lense is developed for full-frame cameras, but you may still utilize it on APS-C sensing units. Nonetheless, on a plant sensing unit electronic camera, it will possess an equal focal size of around 60mm. The lense is created along with 10 factors in 6 groups. These consist of one extra-low dispersal (ED) aspect, 3 high refractive mark (HR) factors, as well as one aspherical component. Additionally, the lense includes a nano-coating. Viltrox says this minimizes ghosting and also dazzle for more clear, a lot more contrast-rich images.Wide maximum apertureThe brand-new Viltrox 40mm prime lens possesses an optimum aperture of F2.5, which need to provide good low-light efficiency and create it less complicated to achieve a superficial deepness of field. The iris uses a 7-blade design nonetheless, Viltrox declares that it still provides a "beautiful bokeh" in out-of-focus areas.AutofocusThe autofocus system on the brand-new Viltrox 40mm lense makes use of an STM (stepping motor). The firm mentions this delivers fast and also silent auto-focus. Furthermore, Viltrox points out the lense displays minimal focus breathing, which is actually excellent for video usage. Focus breathing happens when the graphic dimension modifications somewhat as you draw emphasis. The 40mm lense also supports eye and skin AF methods on Sony video cameras. The minimum required focus distance is actually simply over thirteen inches (0.34 meters). BuildThe brand-new Viltrox 40mm prime lens is actually lightweight at just 5.9 ounces (167 grams). It's additionally compact, assessing 2.4 ins (59.5 mm) in span and 2.6 ins (65 mm) in diameter. Despite its size, Viltrox states the lense has a strong construction for enduring toughness. It likewise has a weather-resistant layout with an anti-fouling layer on the main glass. The filter dimension is 52 mm, and also the lens comes with a small petal-style lense hood.What our company thinkA 40mm lens is an underused central duration. It's looked at closer to just how our experts observe the globe along with our eyes than a standard 50mm lense. A 40mm lens is likewise a fantastic all-round central length. Viltrox's brand-new 40mm prime lense has a relatively vast max eye of F2.5, so you will certainly manage to attain a shallow intensity of field when it is actually broad open. It is going to likewise execute effectively in reduced light. Some of the very best attributes of Viltrox's brand-new lens is its own affordable. If you are actually looking for a 40mm prime lens, the Viltrox is a great budget possibility to consider.AvailabilityThe brand-new Viltrox AF 40mm F2.5 full-frame prime lense for Sony E-mount mirrorless cameras is actually readily available now. It sells for $168.