SIGMA 18- vs VILTROX

Overview of the Sigma 18-50mm F2.8 and Viltrox 85mm F2 EVO FE

The Sigma 18-50mm F2.8 DC DN Contemporary Lens is designed for Canon RF mount mirrorless cameras, while the Viltrox 85mm F2 EVO FE is made for Sony E-mount full-frame cameras. With prices of $599.99 and $275.00 respectively, the Sigma lens is about 118% more expensive than the Viltrox lens. Each lens targets different photography needs, with Sigma focusing on versatility with its zoom range and Viltrox specializing in portrait photography with its fixed focal length.

Build Quality and Design

The Sigma 18-50mm is compact and lightweight, weighing only 300 grams and measuring 69.2mm in diameter and 74.5mm in length. Its rubber-sealed mount enhances its durability, making it suitable for various environments. In contrast, the Viltrox 85mm weighs slightly more at 340 grams but maintains a compact design with a diameter of 69mm and a length of 76mm. Both lenses prioritize portability, but Sigma's rubber sealing gives it an edge for outdoor use under challenging conditions.

Optical Performance

Sigma's lens features a constant aperture of F2.8 throughout its zoom range, which is ideal for capturing images in low light and providing a shallow depth of field. The Viltrox 85mm lens, with its wider F2.0 aperture, excels in creating stunning bokeh, essential for professional portrait photography. The Viltrox is engineered with 10 elements in 8 groups, including Extra-low Dispersion elements to reduce chromatic aberration, delivering sharp and vivid results. While both lenses offer high optical performance, Viltrox may cater better to those focused on portraiture.

Focusing Capabilities

The Sigma 18-50mm offers a minimum focusing distance of 12.1cm, allowing for close-up shots with a maximum magnification of 1:2.8, which is impressive for a zoom lens. The Viltrox 85mm, however, allows for a minimum focusing distance of just 0.74 meters, providing photographers the ability to capture incredible detail in close-up shots. This closer focus capability enhances the Viltrox's suitability for portrait and detail-oriented photography, making it a preferred choice for such applications.

Autofocus Performance

In terms of autofocus, the Sigma lens is designed to provide high-performance and quality focusing, although specific performance details aren't provided. The Viltrox 85mm benefits from a Stepping Motor (STM) system, ensuring smooth, quiet, and precise autofocus, which is particularly advantageous for both photography and video work. This feature makes the Viltrox more versatile for different shooting scenarios, especially in dynamic environments where quick focus adjustments are necessary.

Price Comparison

With the Sigma priced at $599.99 and the Viltrox at $275.00, the Viltrox is considerably more budget-friendly, costing about 54% less than the Sigma lens. For those on a tighter budget or just starting in photography, the Viltrox offers a compelling value without sacrificing essential features for portrait photography. The significant price difference could influence the decision for many photographers, especially when considering the specific needs of their projects.

Intended Use and Target Audience

The Sigma 18-50mm is designed for photographers who require a versatile zoom lens suitable for various shooting situations, including landscapes, events, and casual photography. Its compact form factor makes it an excellent choice for travel and everyday carry. Conversely, the Viltrox 85mm is tailored for portrait photographers seeking high-quality results with rich bokeh and sharp detail. Its specialized design and performance features make it an ideal choice for those focusing specifically on portrait and detail photography.

Which should you buy?

Choosing between the Sigma 18-50mm F2.8 DC DN and the Viltrox 85mm F2 EVO FE largely depends on your photography needs. If versatility and a zoom range are essential, the Sigma lens may be the way to go, despite its higher price. However, if you are focused on portrait photography with a need for excellent bokeh and sharpness at a significantly lower price point, the Viltrox lens presents a compelling option. Ultimately, the decision should align with your specific photographic style and budget considerations.