SIRUI vs VILTROX
Updated July 2026 — SIRUI wins on aperture and focal length, VILTROX wins on price and weight.
The SIRUI 20mm T1.8 offers advanced cinematic features, while the VILTROX 35mm f/1.7 provides excellent value for general photography.
Why SIRUI is better
Cinematic Features
1.33x squeeze factor for wider aspect ratios
Low-Light Performance
T1.8 aperture enhances low-light capabilities
Creative Control
Selectable manual and autofocus options
Why VILTROX is better
Price
70% less expensive than SIRUI
Weight
Significantly lighter at 170g
Versatility
Suitable for various photography styles
Overall score
Specifications
| Spec | SIRUI | VILTROX |
|---|---|---|
| Aperture | T1.8 | f/1.7 |
| Focal Length | 20mm | 35mm |
| Weight | 480g | 170g |
| Autofocus Type | STM | STM |
| Image Circle | 37mm | N/A |
| Optical Elements | 12 | 11 |
Dimension comparison
Overview of the Products
The SIRUI 20mm T1.8 Anamorphic Lens is priced at $599.00, while the VILTROX 35mm f/1.7 E is considerably cheaper at $179.00, making it about 70% less expensive. This significant price difference reflects the distinct features and intended use cases of each lens, catering to different types of photographers and videographers.
The SIRUI lens is designed for filmmakers seeking a cinematic experience with its 1.33x squeeze factor, which allows for wider aspect ratios without cropping. In contrast, the VILTROX lens is optimized for general photography and videography, offering a versatile focal length and a bright f/1.7 aperture that excels in low-light scenarios.
Image Quality and Performance
When it comes to image quality, the SIRUI 20mm T1.8 boasts a unique capability to deliver a 2.35:1 widescreen ratio, which is ideal for cinematic visuals. Its T1.8 ultra-fast aperture allows for enhanced low-light performance and remarkable depth of field control, making it perfect for night scenes and portraits.
On the other hand, the VILTROX 35mm f/1.7 is designed with an optimized optical structure that includes 11 elements in 9 groups, which minimizes chromatic aberrations and flare. This lens is highly regarded for its sharpness and vivid color rendition, making it a solid choice for a diverse range of photography styles, including landscapes and street photography.
Autofocus Capabilities
The SIRUI 20mm T1.8 features selectable manual and autofocus options, powered by a precision STM stepping motor. This system provides smooth, quiet, and accurate autofocus, which is especially beneficial for video creators who require reliable eye-tracking capabilities.
Conversely, the VILTROX 35mm f/1.7 also includes a new STM motor, ensuring fast and precise autofocus that operates quietly. This lens minimizes focus breathing during video recording, making it suitable for filmmakers who prioritize smooth focus transitions. Both lenses excel in autofocus, but the SIRUI offers additional creative control with its AF/MF switch and autofocus lock.
Weight and Portability
The VILTROX 35mm f/1.7 is significantly lighter, weighing only 170g compared to the SIRUI's 480g. This makes the VILTROX lens an excellent choice for photographers on the go, as its compact and lightweight design allows for easy handling and transport.
While the SIRUI lens is still portable, its heavier weight may be a consideration for those who prioritize mobility. The compactness of the VILTROX makes it suitable for casual shooters and those who prefer a less cumbersome setup during outdoor shoots or travel.
Intended Use Cases
The SIRUI 20mm T1.8 is tailored for filmmakers and content creators looking for a cinematic look, making it ideal for capturing expansive landscapes, starry skies, and tight indoor scenes. Its wide angle and unique aspect ratio cater specifically to those in the film industry.
In contrast, the VILTROX 35mm f/1.7 is more versatile and suitable for various photography styles, including portraits and street photography. Its natural perspective, similar to that of the human eye, allows for a broad range of creative applications, making it a great all-around lens for photographers.
Build Quality and Design
The SIRUI 20mm T1.8 features a compact and sturdy design, ideal for professional use. Its build quality is aimed at independent creators and professional productions, ensuring durability in various shooting conditions.
Meanwhile, the VILTROX 35mm f/1.7 sports a sleek metal body that not only enhances its aesthetics but also contributes to its robustness. The inclusion of a USB-C upgrade port for firmware updates is a thoughtful design detail that allows for future-proofing, ensuring compatibility with new camera models.
Price Comparison
The SIRUI 20mm T1.8, priced at $599.00, represents a significant investment, reflecting its advanced features tailored for filmmakers. In contrast, the VILTROX 35mm f/1.7 is priced at $179.00, making it about 70% less expensive. This price disparity can heavily influence the decision for budget-conscious buyers or those just starting in photography or videography.
While the SIRUI offers unique cinematic features, the VILTROX provides excellent value for those seeking quality without breaking the bank.
Which should you buy?
Ultimately, the decision between the SIRUI 20mm T1.8 and the VILTROX 35mm f/1.7 will depend on your specific needs and budget. If you are a filmmaker looking for a high-quality anamorphic lens that delivers cinematic visuals, the SIRUI is a worthwhile investment. However, if you are a photographer or content creator seeking a versatile, budget-friendly lens that excels in various conditions, the VILTROX is an excellent choice. Each lens has its strengths; the best option aligns with your creative goals and shooting style.