Viltrox AF 40mm F 2 5 Review | 54 Data compared

The Viltrox AF 40mm F2.5 E-mount is a compact, lightweight full-frame prime lens that offers an exceptional price-to-performance ratio at just $158 USD. Built around a durable metal lens mount and weighing a negligible 167 grams, it features a built-in USB-C port for seamless firmware updates. Optically, the lens delivers impressive sharpness across the entire frame—even wide open at F2.5—with low distortion, well-controlled lateral chromatic aberrations, and natural color rendering. The stepping focus motor (STM) provides quiet and highly accurate autofocus for daily photography, tracking subjects reliably in both stills and video modes. It serves as a highly portable, budget-friendly alternative to expensive first-party options like the $600 Sony 40mm F2.5 G. Despite its great value, the lens has a few notable drawbacks. The autofocus motor is smooth but lacks reactivity and speed, occasionally lagging behind fast-moving subjects or failing to quickly transition between objects in video "hand tests". Its physical build is quite basic, lacking weather sealing, and the included slim lens hood does not securely click or lock into place. Optically, the bokeh can appear busy or controversial...

The Viltrox AF 40mm f/2.5 Z is a highly affordable, full-frame standard prime lens retailing for just $150 USD, making it a budget-focused option primarily differentiated by its low price and street-friendly 40mm focal length. On the positive side, it delivers good build quality for its price, featuring solid, grippy engineered plastics, an internal focusing mechanism, a durable metal mount, and a fast, nearly silent STM autofocus motor compatible with in-camera stabilization. Optically, the lens produces nicely rendered sun stars, well-controlled lateral chromatic aberrations, and a solid performance in the broader image center, which becomes sharp wide-open at f/2.5 and reaches its sweet spot at f/5.6. However, the lens suffers from several notable optical and design shortcomings. Its outer image field remains somewhat soft at f/2.5, and it lacks weather sealing entirely. It produces a moderate pincushion distortion of just over 2% that cannot be automatically corrected due to a lack of available lens profiles, requiring manual correction in post-processing. Additionally, the lens exhibits strong axial chromatic aberrations (bokeh fringing) wide-open, a high minimum focus distance of 1.1 meters, and...

The Viltrox AF 40mm f/2.5 is a highly affordable, compact, and lightweight prime lens designed for full-frame and APS-C mirrorless cameras, specifically targeting Nikon Z and Sony E mounts. Weighing just 180g and featuring a plastic barrel paired with a durable metal mounting plate, it bridges the gap between 35mm and 50mm focal lengths, making it an excellent choice for street photography and everyday walkabout shooting. Performance-wise, the lens delivers excellent sharpness across most of the frame even wide-open at f/2.5, with very minimal barrel distortion. Its linear stepping motor provides fast, near-silent autofocus that tracks moving subjects well, while its 7-blade diaphragm produces smooth, well-rounded bokeh disks during close-up shooting. The review highlights several distinct pros and cons that define its value proposition. On the positive side, its chief advantages are its highly compact and lightweight form factor, respectable optical performance, and a rock-bottom, incredibly inexpensive purchase price (around $134 to $168). Additionally, it comes equipped with a petal-shaped lens hood and features a built-in USB-C port on the metal mount for future firmware updates. Conversely, the design cuts...

The Viltrox AF 40mm f/2.5 Air is evaluated as a highly impressive, ultra-affordable ($168) everyday prime lens that serves as an excellent single-lens compromise to replace both 35mm and 50mm focal lengths. Tested on a Nikon Z6III during a snowstorm, the reviewer highlights several key advantages, including its exceptionally sharp optics, quick autofocus performance, and very manageable 1.3-foot minimum focus distance for isolating subjects. Additionally, its featherlight plastic construction weighing just 180 grams makes it ideal for minimalist travel and street photography. It also features a superior metal mount compared to Nikon’s pricier, plastic-mounted alternative. However, the lens does come with notable compromises, most notably its lightweight plastic body, which lacks the confidence-inspiring feel of a premium metal casing. It completely lacks weather-sealing, though it managed to survive wet winter testing conditions without any immediate issues. Photographers who prefer specialized shooting may also find the f/2.5 maximum aperture somewhat limiting compared to faster f/1.8 alternatives, and those focused on urban or street work might miss the manual focus distance markings and tactile experience found on premium manual lenses.

The Viltrox AF 40mm F2.5 Z is a highly compact, lightweight full-frame normal prime lens for Nikon Z-mount that offers an exceptional price-to-performance ratio at just $158 USD. Tested on a high-resolution 45MP Nikon Z8, the lens delivers impressively sharp image quality across the frame—even in the mid-frame and corners—with sharp, high-contrast results when stopped down to F4. Its robust build features a tough plastic body constructed around a metal lens mount, and it uniquely integrates a USB-C port for straightforward firmware updates. Additionally, the optical color rendering is natural and neutral, distortion is negligible, and the lens includes a lens hood and pouch, which are often omitted from more expensive lenses. However, the budget lens comes with several handling and optical trade-offs. The autofocus system relies on an STM motor that is quiet and accurate for stills, but it is slow to react during video panning and struggles when shifting focus between subjects. Optically, the lens suffers from heavy vignette requiring considerable digital correction ( in testing), and the bokeh can become busy and distracting due to distinct "bubble"...

The Viltrox AF 40mm F2.5, praised by PCMag as a budget-friendly, compact lens for Sony E and Nikon Z systems, delivers clear, sharp images with quiet, accurate autofocus. Its lightweight polycarbonate design makes it a portable option for daily shooting, offering high value compared to more expensive, first-party alternatives. However, the lens lacks both weather sealing and optical image stabilization, relying entirely on in-camera stabilization, and it omits on-barrel controls like an AF/MF switch. Additionally, the optical performance shows limitations, with hard-edged, sometimes distracting bokeh compared to higher-end options.

The Viltrox AF 40mm F2.5 is a highly affordable, lightweight autofocus lens designed for full-frame mirrorless Sony E and Nikon Z mount systems, earning PCMag’s Editors' Choice award for its impressive value. Weighing just 5.9 ounces, this compact prime lens features a polycarbonate barrel with a sturdy metal bayonet mount. It delivers excellent optical sharpness from center to edge, even when tested on high-resolution 45MP sensors. Its stepping-type motor (STM) provides quiet and accurate autofocus, completing focus transitions in a decent 0.3 to 0.6 seconds. Additionally, it features high flare resistance, minimal false coloring (longitudinal chromatic aberration), and a long, linear focus throw that allows for highly precise manual adjustments. On Nikon cameras, the manual focus ring uniquely functions as a customizable control ring for settings like aperture, ISO, or EV compensation.

The Viltrox AF 40mm f/2.5 "Air" series lens is a highly compact and lightweight third-party prime lens weighing just 167 grams, making it an excellent, unobtrusive choice for travel and street photography. In terms of performance, the reviewer highlights that the lens provides exceptional edge-to-edge sharpness, reaching its optical sweet spot when shot between f/5.6 and f/8. It features an optical design of 10 elements in 6 groups—including special ED, HR, and aspherical elements—which effectively minimize distortion and chromatic aberrations. Additionally, its STM stepping motor provides fast, near-silent autofocus, while the physical build includes a durable metal mount housing a convenient USB-C port for future firmware updates. Despite its strong value, the review notes a few key drawbacks, most notably its maximum aperture of f/2.5, which may deter photographers who prefer faster, pricier glass. The lens also features limited weather sealing beyond an anti-fouling front element coating, making it risky to use in heavy downpours. Furthermore, its lightweight exterior body and hood are constructed entirely from plastic, and the design completely lacks a physical aperture ring, which could alienate tactile...

The Radojuva review of the Viltrox AF 40mm f/2.5 STM ASPH ED IF highlights a lightweight, compact, and budget-friendly standard lens for Sony E and Nikon Z full-frame cameras that offers excellent center sharpness, fast internal focusing, and high build quality. Despite these strengths, the lens exhibits limited light-gathering capabilities compared to faster alternatives and shows noticeable corner softness when used at the maximum f/2.5 aperture.

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