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Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens vs BM Premium High-Power 420-

Updated July 2026 — Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens wins on aperture and size, BM Premium High-Power 420- wins on zoom and weight.

The Canon RF50mm F1.8 STM Lens excels in low-light performance and image quality, while the High-Power 420-1600mm lens offers great zoom capabilities at a lower price.

Why Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens is better

Image Quality

Better low-light performance and bokeh

Portability

More compact and lightweight design

Optical Features

Advanced coatings reduce ghosting and flare

Why BM Premium High-Power 420- is better

Zoom Range

Extensive 420-1600mm zoom capability

Price

More budget-friendly option

Compatibility

Fits a wider range of Canon DSLR models

Overall score

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens
85
BM Premium High-Power 420-
70

Specifications

SpecCanon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensBM Premium High-Power 420-
Focal Length50mm420-1600mm
Aperturef/1.8f/8.3
Weight0.5 lbs2.5 lbs
CompatibilityEOS RCanon DSLRs
Price$219.00$139.99

Dimension comparison

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensBM Premium High-Power 420-

Overview of the Canon RF50mm F1.8 STM Lens

The Canon RF50mm F1.8 STM Lens is a compact and lightweight option designed for EOS R series mirrorless cameras. Priced at $219.00, it’s an excellent choice for photographers looking for versatility in their shooting. The lens features a large f/1.8 aperture, ideal for low-light conditions and creating beautiful background blur, making it suitable for a variety of photographic styles, including portraits and landscapes.

This lens leverages advanced optical technology, including optimized lens placement and coatings that enhance color balance while minimizing ghosting and flare. Its compatibility with the EOS R system ensures that it integrates seamlessly with various Canon mirrorless bodies, providing photographers with a reliable tool for capturing stunning images in diverse environments.

Overview of the High-Power 420-1600mm Telephoto Zoom Lens

The High-Power 420-1600mm f/8.3 HD Manual Telephoto Zoom Lens is priced at $139.99, making it about 36% cheaper than the Canon RF50mm F1.8 STM Lens. This lens is designed for capturing long-distance shots, making it an excellent choice for wildlife and sports photography. The extensive zoom range allows for enhanced photographic flexibility, enabling users to bring distant subjects into sharp focus.

With an aperture of f/8.3, this lens supports detailed photography at longer distances while ensuring that images remain crisp and clear. Its compatibility with a wide range of Canon DSLR models, such as the EOS 80D and 90D, means it can be a versatile addition to any photographer's kit, especially those working in dynamic environments where distance is a factor.

Image Quality Comparison

In terms of image quality, the Canon RF50mm F1.8 STM Lens shines with its large f/1.8 aperture, which excels in low-light situations and creates a pleasing bokeh effect. This lens is optimized to suppress aberrations, ensuring high-quality images with impressive color balance and minimal ghosting and flare. Such characteristics make it a strong contender for portrait and general photography.

On the other hand, the High-Power 420-1600mm lens, while impressive in its zoom capabilities, has a narrower aperture of f/8.3. This can limit its effectiveness in low-light conditions and may not provide the same level of background blur as the Canon RF50mm. However, for distant subjects, it compensates with its ability to capture intricate details across its extensive zoom range. Each lens offers unique advantages in image capture, catering to different photographic needs.

Compatibility and Use Cases

The Canon RF50mm F1.8 STM Lens is specifically designed for the EOS R series mirrorless cameras, ensuring perfect integration and optimal performance. This lens is particularly well-suited for street photography, portraits, and creative compositions, making it a versatile choice for photographers who value portability and performance.

Conversely, the High-Power 420-1600mm lens is compatible with a broader range of Canon DSLR models, including the EOS 80D, 90D, and several Rebel series cameras. This makes it an excellent option for photographers who frequently shoot wildlife or sports from a distance. Its long zoom capability opens up possibilities for capturing action in dynamic settings, although it may not be as compact or easy to handle as the Canon RF50mm.

Design and Build Quality

The Canon RF50mm F1.8 STM Lens boasts a compact and lightweight design, making it easy to carry around for extended periods. Its sleek appearance is complemented by a control ring that allows for direct setting changes, enhancing the shooting experience.

In contrast, the High-Power 420-1600mm lens is likely bulkier due to its extensive zoom range and manual operation. While it may offer impressive zoom capabilities, its size can be a drawback for photographers who prioritize portability. Additionally, the manual focus feature may require more time to adapt to, especially for those used to autofocus systems.

Price and Value

At $219.00, the Canon RF50mm F1.8 STM Lens represents a solid investment for those who prioritize quality and performance in their photography. Its advanced optical features and compatibility with the EOS R series make it a valuable tool for serious photographers.

The High-Power 420-1600mm lens, priced at $139.99, is a more budget-friendly option, offering a significant savings of about $79.01 compared to the Canon RF50mm. This lens provides great value for those needing a long-range solution without breaking the bank, although it may not match the overall image quality and versatility of the Canon RF50mm.

Which should you buy?

Choosing between the Canon RF50mm F1.8 STM Lens and the High-Power 420-1600mm telephoto lens ultimately depends on your specific photography needs. If you’re looking for a compact, high-quality lens that excels in low-light conditions and offers beautiful bokeh, the Canon RF50mm is the clear choice. However, if your focus is on capturing distant subjects with a flexible zoom range at a lower price point, the High-Power 420-1600mm lens provides excellent value. Each lens serves distinct purposes and caters to different types of photographers, so consider what you value most in your photography journey.