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BM Premium High-Power 420- vs SIRUI

Updated July 2026 — BM Premium High-Power 420- wins on zoom and compatibility, SIRUI wins on weight and build.

The High-Power lens is a budget-friendly option for Canon users, while the SIRUI lens excels in cinematic quality for videographers.

Why BM Premium High-Power 420- is better

Price

High-Power lens is significantly cheaper at $139.99.

Zoom Range

Offers an extensive zoom range of 420mm to 1600mm.

Compatibility

Compatible with a wide range of Canon cameras.

Why SIRUI is better

Low-Light

T1.8 aperture provides superior low-light performance.

Cinematic Quality

1.33X squeeze factor creates a cinematic widescreen ratio.

Build Quality

Compact and lightweight design ideal for handheld shooting.

Overall score

BM Premium High-Power 420-
70
SIRUI
85

Specifications

SpecBM Premium High-Power 420-SIRUI
Focal Length420-1600mm20mm
Aperturef/8.3T1.8
Weight1.5kg0.48kg
Zoom TypeManualAutofocus
Aspect RatioN/A2.35:1

Dimension comparison

BM Premium High-Power 420-SIRUI

Price Comparison

The High-Power 420-1600mm f/8.3 HD Manual Telephoto Zoom Lens is priced at $139.99, while the SIRUI 20mm T1.8 Anamorphic Lens comes in significantly higher at $599.00. This makes the telephoto lens about 77% cheaper than the anamorphic lens. For budget-conscious photographers, the lower cost of the High-Power lens is a compelling factor, especially for those who need a versatile lens for wildlife or sports photography. In contrast, the SIRUI lens's price reflects its advanced features designed for cinematographers seeking cinematic quality in their work.

Compatibility and Use Cases

The High-Power lens offers compatibility with a wide range of Canon cameras, including popular models like the EOS 80D, 90D, and several Rebel series cameras. This broad compatibility makes it an excellent choice for Canon users looking to enhance their photographic capabilities. On the other hand, the SIRUI lens is tailored for E-mount cameras, such as the Sony A6500 and A7 series, focusing on filmmakers and videographers who require an anamorphic lens for cinematic projects. Each lens serves its audience well, but the choice depends heavily on the user's camera system.

Optical Performance

The High-Power lens boasts an impressive zoom range of 420mm to 1600mm, enhanced by a 2X teleconverter, allowing photographers to capture distant subjects with clarity. Its f/8.3 aperture provides decent performance, although it may not excel in low-light conditions. Conversely, the SIRUI lens offers a T1.8 ultra-fast aperture, allowing for enhanced low-light performance and creative depth of field control. This lens also features a 1.33x squeeze factor, creating a cinematic 2.35:1 widescreen ratio, which is ideal for filmmakers looking to achieve a professional look in their videos.

Build Quality and Design

The High-Power lens is designed primarily for affordability and functionality, which may come at the expense of premium build quality. However, it remains user-friendly and straightforward for photographers of all levels. The SIRUI lens, meanwhile, is compact and lightweight at only 480g, making it suitable for handheld shooting and gimbal work. Its advanced design and features, such as selectable manual and autofocus, make it a more sophisticated tool for professional videographers and independent creators.

Versatility

While both lenses serve distinct purposes, the High-Power lens is particularly versatile for capturing long-range shots of wildlife and sports, thanks to its extensive zoom capabilities. It is a practical choice for outdoor photographers who need to adapt quickly to different shooting environments. The SIRUI lens excels in versatility for filmmaking, offering a wide-angle perspective that can capture expansive landscapes and tight indoor spaces alike. Its ability to switch between manual and autofocus provides filmmakers with the flexibility to adapt to various shooting scenarios, making it a versatile option for video projects.

Target Audience

The High-Power lens targets budget-conscious photographers who prioritize long-distance shooting capabilities, especially those working with Canon cameras. It is ideal for nature and sports enthusiasts who need to capture high-quality images from afar. In contrast, the SIRUI lens is aimed at professional videographers and filmmakers who require high-quality lenses to produce cinematic visuals. Its advanced features and compatibility with E-mount cameras make it a top choice for those serious about video production.

Brand Reputation

BM Premium, the brand behind the High-Power lens, is known for offering budget-friendly options in the photography space. While it may lack the prestige of some higher-end brands, it appeals to those looking for functional lenses without breaking the bank. Sirui, on the other hand, is recognized for its commitment to quality and innovation in the filmmaking industry. Their lenses, including the SIRUI 20mm T1.8, are well-regarded among professional creators for their optical performance and reliability, making it a preferred choice for serious filmmakers.

Which should you buy?

Choosing between the High-Power 420-1600mm lens and the SIRUI 20mm T1.8 lens ultimately depends on your specific needs and the type of photography or videography you intend to pursue. If you are a Canon shooter looking for an affordable option to capture distant subjects, the High-Power lens is a strong contender, especially at its price of $139.99. Alternatively, if you are a videographer needing a lens that delivers high-quality cinematic visuals and can justify the investment of $599.00, the SIRUI lens is an excellent choice that offers superior low-light performance and creative versatility.