SIRUI vs Tamron 150-
Updated July 2026 — SIRUI wins on price and aperture, Tamron 150- wins on zoom and stability.
The SIRUI 20mm lens is ideal for filmmakers seeking cinematic quality at an affordable price, while the Tamron 150-500mm lens excels in versatility for wildlife and sports photography.
Why SIRUI is better
Price
SIRUI lens is $600 cheaper.
Weight
SIRUI lens is lighter at 480g.
Aperture
SIRUI lens has a wider T1.8 aperture.
Why Tamron 150- is better
Zoom Range
Tamron lens offers 150-500mm zoom.
Image Stabilization
Tamron lens has VC image stabilization.
Autofocus Speed
Tamron lens features high-speed autofocus.
Overall score
Specifications
| Spec | SIRUI | Tamron 150- |
|---|---|---|
| Focal Length | 20mm | 150-500mm |
| Aperture | T1.8 | f/5-6.7 |
| Image Stabilization | No | Yes |
| Autofocus | STM | VXD |
| Sensor Compatibility | Super 35 | Full Frame |
Dimension comparison
Overview of the SIRUI 20mm T1.8 Anamorphic Lens
The SIRUI 20mm T1.8 Anamorphic Lens is designed for E mount cameras, making it an excellent choice for filmmakers seeking a cinematic experience. Priced at $599.00, this lens features a 1.33x squeeze factor that allows for a stunning 2.35:1 widescreen ratio. Its wide T1.8 aperture enhances low-light performance and depth of field control. This lens is optimized for Super 35 sensors, ensuring excellent coverage and image clarity, which is essential for capturing immersive visuals.
Overview of the Tamron 150-500mm Lens
The Tamron 150-500mm f/5-6.7 Di III VC VXD Lens is a versatile ultra-telephoto zoom lens priced at $1,199.00. Designed for full-frame Sony mirrorless cameras, it offers an impressive zoom range that extends up to 500mm. This lens is equipped with VXD technology for high-speed autofocus and VC image stabilization, facilitating handheld shooting even at longer focal lengths. It is highly regarded for its image quality across the zoom range, making it an ideal choice for wildlife and sports photography.
Price Comparison
When it comes to pricing, the SIRUI 20mm lens is significantly more affordable at $599.00, while the Tamron 150-500mm lens is priced at $1,199.00. This represents a difference of $600, making the SIRUI lens about 50% cheaper than the Tamron option. For budget-conscious buyers, the SIRUI lens offers a compelling option without sacrificing quality, especially for those focused on cinematic applications.
Optical Performance
The SIRUI 20mm lens provides a unique optical experience with its 1.33x squeeze factor and T1.8 aperture, allowing for enhanced background blur and depth of field. This makes it particularly suitable for capturing cinematic scenes and expansive landscapes. In contrast, the Tamron lens excels in its telephoto capabilities, offering uncompromising image quality throughout its entire zoom range. This distinction in optical performance caters to different types of photography, with the SIRUI lens ideal for video creators and the Tamron lens better suited for distant subjects.
Autofocus and Stability Features
The SIRUI 20mm lens features a precision STM stepping motor that facilitates smooth and quiet autofocus, essential for video work. It also includes eye-tracking capabilities and an AF/MF switch for creative control. Conversely, the Tamron lens utilizes a linear motor focus mechanism and VC image stabilization to support handheld shooting, particularly beneficial at the ultra-telephoto range. While both lenses prioritize autofocus performance, the SIRUI lens is more tailored for video applications, while the Tamron lens focuses on stability and precision in still photography.
Weight and Portability
The SIRUI 20mm lens weighs only 480g (1.06lb), making it a lightweight option for filmmakers who need a portable solution for handheld shooting. This compact design is ideal for gimbal use and run-and-gun shooting scenarios. On the other hand, the Tamron lens, while still compact for a 500mm lens, is heavier and may be less convenient for long-duration handheld shooting. The difference in weight highlights the SIRUI lens’s advantage for mobility, especially in dynamic shooting environments.
Target Audience
The SIRUI 20mm lens is designed primarily for filmmakers and video creators who want to achieve a cinematic look. Its features cater to those looking to create expansive visuals with a unique aesthetic. In contrast, the Tamron 150-500mm lens targets photographers who require versatility and high-performance optics for capturing distant subjects, such as wildlife and sports. Understanding the specific target audience of each lens helps potential buyers make informed choices based on their photography or videography needs.
Which should you buy?
Choosing between the SIRUI 20mm T1.8 Anamorphic Lens and the Tamron 150-500mm f/5-6.7 Di III VC VXD Lens ultimately depends on your photographic needs. If you are a filmmaker or content creator seeking an affordable, high-quality lens for cinematic shots, the SIRUI lens at $599.00 is an excellent choice. However, if you require a versatile ultra-telephoto lens for wildlife or sports photography and are willing to invest $1,199.00, the Tamron lens offers superior zoom capabilities and image quality. Each lens excels in its domain, making the decision one of preference and purpose.

