Sigma vs VILTROX

Design and build quality

The Sigma lens features a compact design intended to pair high performance with contemporary compactness. It includes standard accessories such as a lens hood, rear cap, and front cap, ensuring immediate usability upon purchase. The build incorporates nine rounded aperture blades, which contribute to the aesthetic quality of out-of-focus areas. In contrast, the VILTROX lens emphasizes a lightweight design with a body weight of 170 g. This compact and lightweight body allows users to capture inspiration at their fingertips. Both lenses utilize metal and composite materials typical of their class, though specific weight data for the Sigma model is not provided in the available specifications.

Optical Performance

Optical structure is a key differentiator between these two options. The VILTROX lens details an optical structure of 11 elements in 9 groups. This configuration includes 1 ED lens, 2 high refractive index lenses, and 1 aspherical lens, alongside high-definition multi-layer coating. These components are designed to reduce aberrations and improve clarity. The Sigma lens is marketed with Art line Image Quality, suggesting a focus on high-resolution output. However, specific element counts or glass types for the Sigma model are not disclosed in the provided data. The VILTROX also specifies an F1.7 large aperture, aimed at creating a dreamy and artistic blur effect.

Autofocus Performance

Both lenses utilize stepping motor technology to drive focus elements. The Sigma lens employs a stepping ring motor, which is generally known for smooth operation during photography and video. The VILTROX lens features a built-in STM stepping motor that provides high driving force for precise autofocus and tracking focus. Additionally, the VILTROX supports eye and face AF for better response, lower latency, and reduced vibration. This support for advanced autofocus features may provide an advantage in dynamic shooting scenarios where subject tracking is critical.

Compatibility and Mount

The Sigma lens is listed with SONY E-mount compatibility. The provided data includes a specific list of compatible DC Lens models, including the SONY a33, a55, a57, a58, a65, a77, a99, a100, a200, a230, a300, a330, a350, a380, a700, and a900. This explicit list helps users verify fitment before purchase. The VILTROX lens data does not explicitly state the mount type in the provided text, though the autofocus features suggest modern mirrorless compatibility. Users should verify mount compatibility with their specific camera body when considering the VILTROX option, as the provided specifications focus more on optical and motor features than mount lists.

Portability and Weight

Portability is a significant factor for photographers who shoot for extended periods. The VILTROX lens weighs 170 g, positioning it as a favorite for impromptu shoots on bustling city streets or serene landscapes. The compact nature of the lens reduces the overall load on the camera rig. The Sigma lens is described as having a compact design, but without a specific weight measurement in the provided data, direct comparison is limited. For users prioritizing minimal weight and ease of transport, the verified 170 g weight of the VILTROX offers a clear metric for decision-making.

Features and Connectivity

Modern lenses often include connectivity options for maintenance and updates. The VILTROX lens features a micro USB interface located at the bottom of the lens. This interface is convenient for future firmware upgrades and makes its performance stronger over time through software improvements. The Sigma lens data does not mention a firmware update port or connectivity features. Both lenses feature nine aperture blades, with the Sigma specifying them as rounded. The rounding of blades typically influences the shape of bokeh highlights, contributing to the overall aesthetic of the image background.

Price and value

Price is a major distinguishing factor between these two products. The Sigma lens is priced at $419.00, reflecting its positioning within the Art line and contemporary compactness category. The VILTROX lens is priced at $179.00, offering a significantly lower entry point. When considering the included accessories, the Sigma lens provides a lens hood and caps, which may add value if purchased separately for the VILTROX. However, the price difference of $240.00 is substantial. For users balancing budget against specifications, the VILTROX provides detailed optical specs and firmware updatability at a lower cost.

Which one should you buy?

Choosing between these lenses depends on specific priorities regarding budget and specifications. If verified weight, optical element details, and firmware updatability are priorities, the VILTROX lens offers transparent specifications at a lower price point. Its 170 g weight and F1.7 aperture specification cater to users needing portability and low-light performance. If included accessories and a verified compatibility list for specific Sony bodies are more important, the Sigma lens provides that assurance. Ultimately, the VILTROX presents a strong value proposition for those seeking detailed optical specs and modern autofocus features without the higher cost associated with the Sigma model.