SIRUI vs VILTROX
Updated July 2026 — SIRUI wins on price and weight, VILTROX wins on aperture and focus distance.
The SIRUI 20mm T1.8 offers superior cinematic features, while the VILTROX 20mm f2.8 is a lightweight and budget-friendly option.
Why SIRUI is better
Cinematic Quality
SIRUI's anamorphic design provides a unique cinematic perspective.
Low-Light Performance
T1.8 aperture allows for better low-light shooting.
Advanced Autofocus
SIRUI features eye-tracking capabilities for precise focus.
Why VILTROX is better
Price
VILTROX is significantly cheaper at $176.
Weight
VILTROX is lighter at 157g, enhancing portability.
Close Focus
VILTROX has a minimum focus distance of 0.62 feet.
Overall score
Specifications
| Spec | SIRUI | VILTROX |
|---|---|---|
| Autofocus | Yes | Yes |
| Sensor Type | Super 35 | Full Frame |
| Optical Elements | 12 | 10 |
| Max Magnification | N/A | 0.17x |
| Build Quality | Professional | Casual |
Dimension comparison
Overview of the Products
The SIRUI 20mm T1.8 Anamorphic Lens and the VILTROX 20mm f2.8 FE are both prime lenses designed for Sony E-mount cameras, but they cater to different photographic needs and styles. The SIRUI lens is priced at $599.00, while the VILTROX lens is significantly less at $176.00, making it about 70% cheaper than the SIRUI model. This price difference reflects the distinct features and target audiences of each lens.
Design and Build Quality
The SIRUI 20mm T1.8 is compact and lightweight, weighing in at 480g (1.06lbs), which makes it suitable for handheld and run-and-gun shooting scenarios. Conversely, the VILTROX 20mm f2.8 is even lighter at just 157g, enhancing its portability, especially for spontaneous photography sessions. Both lenses are designed with functionality in mind, but the SIRUI lens's solid build quality is likely geared more toward professional cinematography, while the VILTROX offers a sleek and convenient option for casual shooters.
Autofocus Capabilities
The SIRUI 20mm T1.8 features a precision STM stepping motor that provides smooth, accurate, and quiet autofocus, along with eye-tracking capabilities. This makes it an excellent choice for filmmakers who require precise focus during video shoots. On the other hand, the VILTROX 20mm f2.8 also emphasizes fast autofocus performance, designed to capture fast-moving subjects with a near-silent shutter sound. While both lenses deliver effective autofocus, the SIRUI's advanced features may appeal more to professional shooters, whereas the VILTROX lens is suitable for everyday photography.
Aperture and Low-Light Performance
The SIRUI 20mm T1.8 boasts an ultra-fast T1.8 aperture, allowing more light to enter the lens for improved low-light performance and depth of field control. This feature enables clearer night scenes and beautiful bokeh effects, which are essential for cinematic work. In contrast, the VILTROX 20mm f2.8, with its f/2.8 aperture, is decent for low-light environments but does not provide the same level of light-gathering capability as the SIRUI lens. The difference in aperture performance may significantly impact users who often shoot in challenging lighting conditions.
Image Quality and Coverage
The SIRUI lens is optimized for APS-C and Super 35 sensors, covering a 37mm image circle to deliver excellent image clarity and a 2.35:1 widescreen ratio due to its 1.33X squeeze factor. This design is perfect for those looking to create cinematic visuals. The VILTROX 20mm f2.8, while a full-frame lens, employs an optical structure of 10 elements in 8 groups, including 2 ED lenses and 2 aspherical lenses, to ensure crisp and distortion-free images. While both lenses provide quality optics, the SIRUI's anamorphic design offers a unique cinematic perspective that may not be matched by the VILTROX.
Minimum Focus Distance
The SIRUI 20mm T1.8 does not specify a minimum focus distance, but its wide-angle capabilities make it suitable for capturing expansive landscapes and tight indoor spaces. The VILTROX lens, however, has a minimum focus distance of 0.62 feet (0.19 meters), allowing for close-up shots of subjects. This feature can be particularly beneficial for photographers looking to capture more intimate details, making the VILTROX a versatile option for various shooting situations.
Intended Use and Target Audience
The SIRUI 20mm T1.8 lens is ideal for cinematographers and video creators seeking to produce high-quality, cinematic content with its anamorphic capabilities and advanced autofocus features. In contrast, the VILTROX 20mm f2.8 is designed for photographers who prioritize portability and ease of use for everyday shooting. This lens is particularly attractive to hobbyists and those who may not require the specialized features of a professional lens.
Which should you buy?
Choosing between the SIRUI 20mm T1.8 and the VILTROX 20mm f2.8 ultimately depends on your specific needs and budget. If you're a professional filmmaker seeking cinematic quality and advanced autofocus for $599.00, the SIRUI lens is likely the better choice. However, if you're looking for a lightweight, versatile lens for casual photography at a budget-friendly price of $176.00, the VILTROX lens is an excellent option. Consider your shooting style and requirements to make the most informed decision.

