.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 provider released with a Nikon Z-mount previously this year.Optical designThe new Viltrox 40mm prime lens is actually designed for full-frame electronic cameras, however you can easily still utilize it on APS-C sensors. Nonetheless, on a crop sensor video camera, it will certainly have an equivalent focal length of around 60mm. The lense is actually constructed along with 10 factors in six groups. These consist of one extra-low distribution (ED) aspect, 3 higher refractive index (HUMAN RESOURCES) factors, and also one aspherical aspect. Furthermore, the lens features a nano-coating. Viltrox claims this decreases ghosting as well as dazzle for clearer, much more contrast-rich images.Wide max apertureThe brand-new Viltrox 40mm prime lense has a max aperture of F2.5, which must provide good low-light performance and produce it less complicated to obtain a shallow depth of area. The eye utilizes a 7-blade layout however, Viltrox asserts that it still delivers a "stunning bokeh" in out-of-focus areas.AutofocusThe auto-focus body on the brand-new Viltrox 40mm lense uses an STM (stepping electric motor). The business says this delivers quick and also peaceful autofocus. Additionally, Viltrox claims the lense shows minimal emphasis breathing, which is great for video clip use. Concentration breathing occurs when the photo dimension improvements somewhat as you take concentration. The 40mm lense also supports eye and face AF settings on Sony cameras. The minimum required concentration proximity is actually simply over 13 inches (0.34 gauges). BuildThe new Viltrox 40mm prime lens is actually light-weight at just 5.9 ounces (167 grams). It's additionally small, evaluating 2.4 ins (59.5 mm) in span and also 2.6 inches (65 mm) in dimension. Despite its size, Viltrox says the lense has a sturdy building and construction for enduring longevity. It additionally has a weather-resistant style with an anti-fouling covering on the frontal glass. The filter measurements is 52 mm, and the lens comes with a tiny petal-style lense hood.What our team thinkA 40mm lense is an underused central size. It's considered closer to just how we see the planet with our eyes than a regular 50mm lense. A 40mm lense is actually also a great all-purpose central size. Viltrox's new 40mm prime lense possesses a fairly vast max eye of F2.5, therefore you will certainly manage to attain a shallow depth of area when it's wide open. It will also do properly in reduced illumination. Among the most ideal features of Viltrox's brand-new lense is its affordable. If you are actually trying to find a 40mm prime lense, the Viltrox is an excellent spending plan option to consider.AvailabilityThe new Viltrox AF 40mm F2.5 full-frame prime lens for Sony E-mount mirrorless cameras is available currently. It retails for $168.