Canon RF45mm F1.2 STM vs Big Mike's High-Power 420-
Updated July 2026 — Canon RF45mm F1.2 STM wins on price, Big Mike's High-Power 420- wins on focal length and length.
The Canon RF45mm F1.2 STM excels in image quality and versatility, while the High-Power 420-1600mm offers budget-friendly long-range options.
Why Canon RF45mm F1.2 STM is better
Image Quality
Superior low-light performance and bokeh effects.
Versatility
Suitable for various photography styles.
Build Quality
Compact and lightweight design.
Why Big Mike's High-Power 420- is better
Price
Significantly cheaper option.
Zoom Range
Extensive zoom capabilities.
Compatibility
Fits a wide range of Canon DSLR models.
Overall score
Specifications
| Spec | Canon RF45mm F1.2 STM | Big Mike's High-Power 420- |
|---|---|---|
| Max Aperture | f/1.2 | f/8.3 |
| Focal Length | 45mm | 420-1600mm |
| Weight | 0.5 lbs | 1.5 lbs |
| Build Material | Metal | Plastic |
| Image Stabilization | Yes | No |
Dimension comparison
Overview of the Canon RF45mm F1.2 STM
The Canon RF45mm F1.2 STM is a premium lens priced at $469.00, designed for creators who want a compact and versatile prime lens. This lens features an impressive f/1.2 maximum aperture, which allows for exceptional low-light performance and beautiful bokeh effects. The lens is optimized for Canon's mirrorless cameras, taking advantage of a large-diameter mount that enhances image quality and minimizes distortion.
In contrast, the High-Power 420-1600mm f/8.3 HD Manual Telephoto Zoom Lens is significantly more affordable at $139.99, making it about 70% cheaper than the Canon RF45mm. This lens appeals to photographers seeking to capture distant subjects, such as wildlife or sports, with its extensive zoom range. However, the trade-off includes a smaller maximum aperture of f/8.3, which may limit its performance in low-light situations.
Build Quality and Design
The Canon RF45mm F1.2 STM is designed with quality and usability in mind. Its compact size and lightweight design make it ideal for on-the-go photographers. The lens is built with a large-diameter mount and features digital distortion correction, ensuring sharp images with minimal aberrations.
On the other hand, the High-Power 420-1600mm lens, while offering an impressive zoom range, is typically bulkier and may not provide the same level of ruggedness or build quality as the Canon RF45mm. The design prioritizes functionality for long-distance photography but may compromise on portability and ease of use.
Optical Performance
The optical performance of the Canon RF45mm F1.2 STM is exceptional, especially given its wide aperture. The lens excels in creating a three-dimensional look with its bokeh, isolating subjects beautifully against soft backgrounds. Additionally, the effective placement of PMo aspheric lenses minimizes optical aberrations, enhancing overall image quality.
In contrast, the High-Power 420-1600mm lens offers a unique zoom capability but operates with a maximum aperture of f/8.3, which may result in less sharpness and detail in low-light conditions. Although it can capture images at great distances, the optical performance may not match that of the Canon RF45mm, particularly for portraits or detailed shots.
Versatility and Use Cases
The Canon RF45mm F1.2 STM is highly versatile, making it suitable for various photography styles, including portraits, lifestyle, and everyday narratives. Its fast aperture allows for creative shooting even in challenging lighting conditions, which is a significant advantage for many photographers.
Conversely, the High-Power 420-1600mm lens is specialized for long-range photography. While it excels in capturing distant subjects, its use cases are more limited to scenarios like wildlife observation or sports events. The lack of a fast aperture means it may not perform well in more general photography situations where versatility is key.
Compatibility
The Canon RF45mm F1.2 STM is optimized for Canon's mirrorless system, ensuring seamless integration with these cameras. This compatibility enhances autofocus performance and overall functionality, allowing photographers to maximize their equipment's potential.
The High-Power 420-1600mm lens is compatible with a wide range of Canon DSLR models, including the Rebel series and the EOS 5D lineup. This broad compatibility opens up options for photographers who own older Canon DSLRs but may limit features such as autofocus compared to the Canon RF45mm, which is designed for newer technology.
Price Comparison
At $469.00, the Canon RF45mm F1.2 STM represents a significant investment, particularly for those who prioritize image quality and low-light performance. However, for those on a budget, the High-Power 420-1600mm lens offers a compelling alternative at $139.99, making it about 70% less expensive.
While the price difference is substantial, it reflects the intended use and capabilities of each lens. The Canon RF45mm is designed for professional-quality photography, while the High-Power lens targets hobbyists and those needing a long-range option without breaking the bank.
User Experience
Users of the Canon RF45mm F1.2 STM often praise its image quality and the aesthetic appeal of its bokeh. The lens is well-regarded for its performance in various lighting conditions, making it a favorite among portrait photographers. However, some may find the higher price tag a deterrent.
In contrast, users of the High-Power 420-1600mm lens appreciate its affordability and long zoom range, allowing them to explore photography at a distance. However, the manual focus may pose challenges for those accustomed to autofocus systems, and the f/8.3 aperture can limit creativity in low-light situations.
Which should you buy?
Choosing between the Canon RF45mm F1.2 STM and the High-Power 420-1600mm f/8.3 HD Manual Telephoto Zoom Lens ultimately depends on your photography needs and budget. If you require a versatile, high-quality lens for portraits and low-light scenarios, the Canon RF45mm is worth the investment at $469.00. However, if you're looking for a budget-friendly option to capture distant subjects and are willing to work with manual focus, the High-Power lens at $139.99 might be the better choice for you.

