SIGMA 18- vs YONGNUO

Overview of the SIGMA 18-50mm and YONGNUO 35mm Lenses

The SIGMA 18-50mm F2.8 DC DN Contemporary Lens and the YONGNUO 35mm F1.8 Art Auto Focus Lens are both excellent options for photographers using Canon RF and Sony E mount systems, respectively. The SIGMA lens is priced at $599.99, making it a more premium offering compared to the YONGNUO, which retails for $128.00—approximately 79% cheaper. This price difference reflects the specific features and target audiences of each lens, which cater to different photographic needs.

Build and Design

The SIGMA 18-50mm features a lightweight and compact design, boasting a maximum diameter of 69.2mm and a length of 74.5mm, weighing just 300g. This makes it the smallest in its class, ideal for photographers who prioritize portability. In contrast, the YONGNUO 35mm lens measures approximately Ø63.5mm in diameter and 79.9mm in length, which is slightly bulkier but still manageable. Both lenses are designed for durability, with the YONGNUO featuring a metal outer shell and a dustproof and waterproof rubber ring, while the SIGMA includes a rubber-sealed mount for varied environments.

Optical Performance

In terms of optical performance, the SIGMA lens offers a versatile zoom range of 18-50mm with a constant aperture of F2.8, making it suitable for a variety of shooting conditions. On the other hand, the YONGNUO lens has a fixed aperture of F1.8, which allows for excellent low-light performance and beautiful background bokeh. This feature makes the YONGNUO particularly appealing for portrait photography and creative shooting in dim conditions. Each lens has its strengths based on the type of photography you intend to pursue.

Autofocus Capabilities

Both lenses are equipped with autofocus systems, but they differ in their approach. The YONGNUO 35mm features a very quiet autofocus mechanism, which is beneficial for video recording and capturing candid moments without noise interference. The SIGMA lens, while not explicitly mentioned as having a quiet autofocus, is known for its high-performance capabilities, allowing for quick and accurate focusing. Depending on your shooting style—whether it be stills or videos—this could be a decisive factor.

Minimum Focusing Distance

The minimum focusing distance is crucial for photographers who enjoy close-up shots. The SIGMA lens allows for a minimum focusing distance of 12.1cm, with a maximum magnification of 1:2.8, enabling detailed close-ups. Conversely, the YONGNUO lens has a minimum focusing distance of 0.35m, which is longer but still provides good versatility for standard shooting. The SIGMA's superior close-focusing ability may attract macro enthusiasts or those who want to experiment with depth of field in close-up photography.

Compatibility

The SIGMA 18-50mm is designed specifically for Canon RF mount mirrorless cameras, ensuring seamless integration and optimal performance within that system. Meanwhile, the YONGNUO 35mm lens supports a wide range of Sony E-mount mirrorless cameras including popular models like the A7 series and the FX series. This broad compatibility makes the YONGNUO a flexible option for photographers who may own multiple Sony bodies, while the SIGMA lens is tailored for users committed to the Canon ecosystem.

Price Comparison

With a significant price disparity, the YONGNUO 35mm lens at $128.00 is about 79% cheaper than the SIGMA 18-50mm lens at $599.99. This drastic difference in price could be a major consideration for budget-conscious photographers or those just starting in their photography journey. While the SIGMA lens offers advanced features and performance, the YONGNUO provides excellent value for those seeking quality on a budget. The average price over the last 90 days for the SIGMA was $566.22, indicating that it maintains a premium positioning in the market, while the YONGNUO has shown a more stable price around $123.38.

Which should you buy?

Choosing between the SIGMA 18-50mm and the YONGNUO 35mm largely depends on your specific photographic needs and budget. The SIGMA lens offers superior versatility with its zoom capabilities, compact design, and excellent close-focusing performance, making it ideal for those who want a reliable all-rounder. On the other hand, the YONGNUO lens provides exceptional value with its large aperture, quiet autofocus, and lower price point, perfect for portrait and low-light photography. Ultimately, if budget is a primary concern, the YONGNUO is an outstanding choice, while the SIGMA would be suited for those willing to invest more for a versatile and high-performing lens.