BM Premium High-Power 420- vs SIGMA 18-
Updated July 2026 — BM Premium High-Power 420- wins on zoom and aperture, SIGMA 18- wins on price and weight.
The SIGMA 18-50mm lens offers superior performance and versatility, while the High-Power lens is a budget-friendly option for telephoto needs.
Why BM Premium High-Power 420- is better
Price
High-Power lens is significantly cheaper.
Zoom Range
High-Power lens offers a much longer zoom.
Compatibility
High-Power lens works with a wide range of Canon DSLRs.
Why SIGMA 18- is better
Aperture
SIGMA lens has a constant f/2.8 aperture.
Build Quality
SIGMA lens features rubber sealing for durability.
Weight
SIGMA lens is lighter and more compact.
Overall score
Specifications
| Spec | BM Premium High-Power 420- | SIGMA 18- |
|---|---|---|
| Focal Length | 420-1600mm | 18-50mm |
| Aperture | f/8.3 | f/2.8 |
| Compatibility | Canon DSLRs | Canon RF |
| Weight | N/A | 300g |
| Zoom Type | Manual | Auto |
Dimension comparison
Overview of High-Power 420-1600mm f/8.3 HD Manual Telephoto Zoom Lens
The High-Power 420-1600mm f/8.3 HD Manual Telephoto Zoom Lens is designed for serious photographers looking to capture distant subjects with precision. Priced at $139.99, this lens offers an impressive zoom capability, enabling users to photograph wildlife, sports, and landscapes from afar. Its compatibility with a wide range of Canon cameras adds to its appeal, making it a versatile choice for many photographers.
This lens features a 2X Teleconverter that doubles its focal length, allowing an astonishing reach of 1600mm. It is tailored for EF-Mount Canon DSLRs, ensuring a secure fit and enhanced picture quality. With a sophisticated f/8.3 aperture, this lens promises crisp and clear images, making it an excellent option for outdoor photography enthusiasts.
Overview of SIGMA 18-50mm F2.8 DC DN Contemporary Lens
The SIGMA 18-50mm F2.8 DC DN Contemporary Lens offers high performance for Canon RF mount mirrorless cameras at a price of $599.99. This lens stands out for its compact and lightweight design, making it a practical choice for photographers who value portability without sacrificing quality. With a maximum diameter of 69.2mm and a length of 74.5mm, it is the smallest and lightest in its class, weighing just 300g.
Additionally, the lens is rubber-sealed, allowing it to withstand various environmental conditions, which is a significant advantage for outdoor shooting. Its minimum focusing distance of 12.1cm and maximum magnification of 1:2.8 enable users to capture close-up shots, enhancing its versatility for different photography styles.
Image Quality Comparison
When it comes to image quality, the High-Power 420-1600mm lens is engineered for long-distance photography, providing clear and detailed images thanks to its advanced zoom capabilities. The f/8.3 aperture allows for decent light capture, though it may not be as effective in low-light situations compared to faster lenses.
On the other hand, the SIGMA 18-50mm lens boasts a constant f/2.8 aperture throughout its zoom range, enabling better performance in low-light conditions. This lens's design focuses on delivering high-quality images with superior color accuracy and sharpness, making it ideal for a range of photography styles, from portraits to landscapes.
Compatibility and Usability
The High-Power 420-1600mm lens is compatible with numerous Canon models, including the EOS 80D, 90D, and various Rebel series cameras. This broad compatibility ensures that many Canon users can utilize this lens without issues. However, being a manual lens may require users to adjust settings manually, which might not appeal to everyone.
In contrast, the SIGMA 18-50mm lens is specifically designed for Canon RF mount mirrorless cameras, making it a perfect fit for modern Canon users. Its lightweight and compact design enhances usability, allowing photographers to carry it comfortably during shoots. The ease of use is further emphasized by its close-focusing capability, making it suitable for various shooting scenarios.
Price Analysis
The High-Power 420-1600mm lens is priced at $139.99, which positions it as a budget-friendly option in the telephoto lens market. This lens offers significant value for photographers looking for a long-range solution without breaking the bank. In comparison, the SIGMA 18-50mm lens carries a higher price tag of $599.99, making it about 329% more expensive than its counterpart.
While the SIGMA lens justifies its cost with superior performance, image quality, and convenience, the High-Power lens remains an attractive option for those who need a telephoto solution at a lower price point.
Performance in Different Environments
The High-Power 420-1600mm lens excels in outdoor environments where capturing distant subjects is crucial. Its design allows for versatile photography in various settings, such as wildlife and sports events. However, its manual focus might pose challenges in fast-paced shooting scenarios.
Conversely, the SIGMA 18-50mm lens is designed with environmental adaptability in mind, featuring a rubber-sealed mount that protects against dust and moisture. This makes it suitable for various conditions, whether in a studio or outdoors. Its compact size and lightweight construction further enhance its performance for everyday use, allowing photographers to easily handle their gear.
Conclusion on Build Quality and Durability
The High-Power 420-1600mm lens is built with a focus on functionality, providing a robust telephoto option for Canon DSLR users. However, it lacks some of the advanced construction features found in higher-end lenses, which may affect its long-term durability.
In contrast, the SIGMA 18-50mm lens is crafted with high-quality materials and includes features such as rubber sealing, enhancing its longevity and reliability in diverse shooting situations. This lens's build quality aligns with its premium price, offering users a dependable tool for both casual and professional photography.
Which should you buy?
Choosing between the High-Power 420-1600mm f/8.3 HD Manual Telephoto Zoom Lens and the SIGMA 18-50mm F2.8 DC DN Contemporary Lens ultimately depends on your photography needs and budget. If you are seeking an affordable telephoto lens for capturing distant subjects and are comfortable with manual settings, the High-Power lens at $139.99 is a commendable choice. However, if you prioritize high-quality images, versatility, and ease of use, and do not mind spending more, the SIGMA lens at $599.99 provides excellent performance and adaptability for modern photography.

