.Viltrox has launched a brand-new full-frame 40mm F2.5 autofocus prime lens for Sony E-mount mirrorless cameras. It's the same lense the firm discharged with a Nikon Z-mount earlier this year.Optical designThe brand-new Viltrox 40mm prime lens is actually designed for full-frame video cameras, however you can easily still utilize it on APS-C sensing units. Having said that, on a plant sensing unit camera, it will definitely possess a comparable central size of around 60mm. The lens is built along with 10 factors in 6 groups. These include one extra-low dispersion (ED) factor, three high refractive mark (HR) elements, as well as one aspherical factor. On top of that, the lens features a nano-coating. Viltrox states this minimizes ghosting and flare for clearer, much more contrast-rich images.Wide maximum apertureThe brand-new Viltrox 40mm prime lense possesses a max eye of F2.5, which need to offer good low-light efficiency and also create it simpler to attain a superficial intensity of field. The iris uses a 7-blade concept having said that, Viltrox claims that it still delivers a "gorgeous bokeh" in out-of-focus areas.AutofocusThe autofocus device on the brand new Viltrox 40mm lens makes use of an STM (tipping electric motor). The firm says this delivers fast as well as quiet autofocus. On top of that, Viltrox states the lens presents low emphasis breathing, which is great for video use. Focus breathing occurs when the graphic dimension improvements a little as you pull concentration. The 40mm lense also assists eye and also skin AF modes on Sony electronic cameras. The lowest focus span is only over 13 inches (0.34 meters). BuildThe brand new Viltrox 40mm prime lense is actually light-weight at merely 5.9 ozs (167 grams). It's likewise sleek, gauging 2.4 inches (59.5 mm) in duration and 2.6 inches (65 mm) in diameter. Regardless of its own measurements, Viltrox says the lens possesses a robust building for resilient longevity. It likewise has a weather-resistant design with an anti-fouling finish on the front glass. The filter measurements is actually 52 mm, as well as the lense features a tiny petal-style lens hood.What we thinkA 40mm lense is an underused focal duration. It's looked at closer to just how our team find the planet along with our eyes than a regular 50mm lense. A 40mm lense is actually likewise a terrific all-round focal size. Viltrox's new 40mm prime lense has a pretty vast maximum aperture of F2.5, thus you will certainly be able to achieve a superficial deepness of area when it's large open. It is going to also carry out effectively in reduced light. Some of the best attributes of Viltrox's new lens is its own small cost. If you are trying to find a 40mm prime lens, the Viltrox is actually an excellent finances possibility to consider.AvailabilityThe new Viltrox AF 40mm F2.5 full-frame prime lense for Sony E-mount mirrorless electronic cameras is on call currently. It retails for $168.