.Viltrox has launched a brand new full-frame 40mm F2.5 autofocus prime lense for Sony E-mount mirrorless electronic cameras. It's the same lense the provider launched with a Nikon Z-mount previously this year.Optical designThe new Viltrox 40mm prime lense is developed for full-frame electronic cameras, but you can still use it on APS-C sensing units. Nevertheless, on a crop sensor camera, it will definitely have a comparable focal span of around 60mm. The lens is actually created with 10 aspects in six teams. These feature one extra-low distribution (ED) element, 3 high refractive index (HUMAN RESOURCES) aspects, as well as one aspherical factor. On top of that, the lens features a nano-coating. Viltrox says this minimizes ghosting and also flare for clearer, extra contrast-rich images.Wide optimum apertureThe new Viltrox 40mm prime lense possesses a maximum eye of F2.5, which ought to offer really good low-light efficiency and also produce it easier to accomplish a superficial intensity of field. The eye uses a 7-blade concept nonetheless, Viltrox asserts that it still provides a "gorgeous bokeh" in out-of-focus areas.AutofocusThe auto-focus body on the brand new Viltrox 40mm lense uses an STM (stepping electric motor). The company mentions this delivers quickly and quiet auto-focus. On top of that, Viltrox mentions the lense shows marginal concentration breathing, which is actually excellent for video usage. Focus breathing occurs when the image measurements improvements a little as you take concentration. The 40mm lens additionally sustains eye as well as face AF settings on Sony video cameras. The minimum emphasis range is actually only over thirteen inches (0.34 meters). BuildThe brand new Viltrox 40mm prime lense is light in weight at only 5.9 ozs (167 grams). It is actually likewise portable, evaluating 2.4 ins (59.5 mm) in length and also 2.6 ins (65 mm) in size. Even with its own size, Viltrox claims the lens possesses a robust development for enduring durability. It likewise has a weather-resistant design along with an anti-fouling layer on the front glass. The filter measurements is actually 52 mm, as well as the lens possesses a little petal-style lense hood.What our team thinkA 40mm lense is actually an underused focal span. It's thought about closer to just how our team find the globe with our eyes than a common 50mm lens. A 40mm lense is actually also a terrific all-round central size. Viltrox's new 40mm prime lens has a relatively broad optimum eye of F2.5, so you are going to manage to attain a shallow deepness of area when it is actually large open. It will also do properly in reduced lighting. One of the very best features of Viltrox's brand-new lense is its own low price. If you are seeking a 40mm prime lens, the Viltrox is a wonderful budget option to consider.AvailabilityThe brand new Viltrox AF 40mm F2.5 full-frame prime lens for Sony E-mount mirrorless video cameras is readily available now. It retails for $168.