SIRUI vs VILTROX PRO
Updated July 2026 — SIRUI wins on weight and build quality, VILTROX PRO wins on versatility.
The SIRUI 20mm T1.8 excels in cinematic features, while the VILTROX PRO 27mm F1.2 offers versatility for photographers. Choose based on your primary needs.
Why SIRUI is better
Cinematic Quality
SIRUI offers a 1.33x squeeze factor for cinematic visuals.
Autofocus Features
SIRUI has advanced eye-tracking autofocus.
Low-Light Performance
SIRUI's T1.8 aperture allows better low-light shooting.
Why VILTROX PRO is better
Price
VILTROX is priced lower at $578.
Bokeh Quality
VILTROX's F1.2 aperture produces creamy bokeh.
Optical Quality
VILTROX has a complex optical design for sharp images.
Overall score
Specifications
| Spec | SIRUI | VILTROX PRO |
|---|---|---|
| Focal Length | 20mm | 27mm |
| Max Aperture | T1.8 | F1.2 |
| Weight | 480g | 500g |
| Mount Type | E Mount | X Mount |
| Optical Elements | 12 elements | 15 elements |
Dimension comparison
Overview of the SIRUI 20mm T1.8 and VILTROX PRO 27mm F1.2
The SIRUI 20mm T1.8 and VILTROX PRO 27mm F1.2 are both exceptional lenses designed for different camera systems, targeting filmmakers and photographers alike. The SIRUI 20mm T1.8 is priced at $599.00, while the VILTROX PRO 27mm F1.2 is slightly cheaper at $578.00, marking a price difference of about 3.5%. Each lens has unique features tailored to their intended uses, making them appealing to specific user preferences.
Lens Design and Build Quality
The SIRUI 20mm T1.8 is engineered for E mount cameras and offers a compact design weighing only 480g (1.06 lb). This lens is crafted for versatility in handheld shooting and gimbal use, appealing to cinematographers seeking mobility. In contrast, the VILTROX PRO 27mm F1.2 is built for Fujifilm X mount cameras and features an optical construction of 15 glass elements in 11 groups. This setup not only reduces chromatic aberrations but also maintains high resolution, making it ideal for those who prioritize optical quality in their photography. Both lenses present a robust quality, but their designs cater to different shooting styles.
Aperture and Light Performance
The SIRUI 20mm T1.8 boasts an ultra-fast T1.8 aperture, allowing more light to enter, which is crucial for low-light conditions. This feature ensures clearer night scenes and enhances depth of field control. On the other hand, the VILTROX PRO 27mm F1.2 features a super large aperture of F1.2, producing a creamy bokeh that is perfect for portrait photography. Both lenses excel in their respective areas of low-light performance and aesthetic quality, but the SIRUI offers a slightly wider aperture, potentially providing a marginally better performance in extremely low-light scenarios.
Focal Length and Versatility
With a focal length of 20mm, the SIRUI lens provides a horizontal field of view equivalent to a 22mm full-frame lens, making it suitable for expansive landscapes and tight indoor spaces. The VILTROX PRO 27mm, with its focal length equivalent to 40mm, offers a more natural depth perspective, versatile enough for various genres—from street photography to architectural shots. While the SIRUI is more suited for wide-angle scenes, the VILTROX excels in capturing everyday moments with a natural feel, allowing users to choose based on their shooting needs.
Autofocus Capabilities
The SIRUI 20mm T1.8 features selectable manual and autofocus modes powered by a precision STM stepping motor, ensuring accurate and quiet autofocus. It includes eye-tracking features and an AF/MF switch, providing great creative control for video creators. Conversely, the VILTROX PRO 27mm F1.2 also emphasizes fast and precise autofocus performance, supporting eye focus and near-silent operation. Both lenses deliver impressive autofocus capabilities, but the SIRUI seems to offer more advanced tracking features, which could be a deciding factor for filmmakers.
Image Quality and Aberration Control
Both lenses prioritize image quality, but their approaches differ. The SIRUI 20mm T1.8 is optimized for APS-C and Super 35 sensors, delivering excellent coverage and clarity. Its 1.33x squeeze factor creates cinematic visuals, enhancing the overall viewing experience. In contrast, the VILTROX PRO 27mm F1.2 focuses on controlling optical aberrations through its complex glass construction. This lens delivers sharp images with reduced chromatic aberrations, making it ideal for high-resolution photography. Photographers seeking cinematic footage may lean towards the SIRUI, while those prioritizing sharpness may prefer the VILTROX.
Target Audience
The SIRUI 20mm T1.8 is particularly appealing to filmmakers and content creators who require a lens that can deliver cinematic quality in a compact form. Its features cater specifically to video production, making it a valuable tool for creatives in the film industry. On the other hand, the VILTROX PRO 27mm F1.2 appeals more to photographers looking for a versatile lens that excels in various genres, particularly portraiture. Understanding the target audience is crucial, as each lens serves distinct needs within the photography and videography communities.
Which should you buy?
Choosing between the SIRUI 20mm T1.8 and the VILTROX PRO 27mm F1.2 ultimately depends on your specific needs as a creator. If you prioritize cinematic visuals and advanced autofocus features for video production, the SIRUI lens, priced at $599.00, is a compelling choice. However, if you’re looking for a versatile lens that excels in portraiture and general photography at a slightly lower price of $578.00, the VILTROX lens might be the better option. Both lenses offer exceptional quality, but understanding your primary shooting style will guide you in making the right decision.

