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Canon RF75- vs Big Mike's High-Power 420-

Updated July 2026 — Canon RF75- wins on portability and build quality, Big Mike's High-Power 420- wins on weight and length.

The Canon RF75-300mm lens excels in portability and autofocus, while the High-Power 420-1600mm lens offers extensive zoom at a lower price.

Why Canon RF75- is better

Portability

The Canon lens is compact and lightweight.

Autofocus

The Canon lens features advanced autofocus capabilities.

Included Accessories

The Canon lens comes with a UV filter and cleaning kit.

Why Big Mike's High-Power 420- is better

Zoom Range

The High-Power lens offers a much longer zoom range.

Price

The High-Power lens is significantly cheaper.

Compatibility

The High-Power lens is compatible with a wider range of Canon cameras.

Overall score

Canon RF75-
85
Big Mike's High-Power 420-
75

Specifications

SpecCanon RF75-Big Mike's High-Power 420-
Focal Length75-300mm420-1600mm
Aperturef/4-5.6f/8.3
AutofocusYesNo
CompatibilityEOS RDSLR
Included AccessoriesYesNo

Dimension comparison

Canon RF75-Big Mike's High-Power 420-

Overview of Canon RF75-300mm F4-5.6 Zoom Lens

The Canon RF75-300mm F4-5.6 Zoom Lens offers a compelling combination of features in a compact design. Priced at $239.00, this lens is designed specifically for Canon EOS R series cameras, making it a great choice for photographers looking for portability and versatility. It weighs about the same as a 500ml water bottle, which enhances its usability for on-the-go shooting. With an impressive zoom range, this lens allows for dramatic changes in composition and perspective, making it ideal for capturing various subjects.

Overview of 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 41% cheaper than the Canon RF75-300mm lens. This lens caters to a wide range of Canon DSLR cameras, including models like the EOS 70D and 90D. Its standout feature is its impressive zoom capability, which can extend up to 1600mm, making it highly suitable for long-distance photography such as wildlife and sports. The lens offers great versatility and flexibility, enabling photographers to get closer to their subjects without physically moving.

Portability and Design

In terms of portability, the Canon RF75-300mm lens is designed to be compact and lightweight, making it easy to carry for extended periods. Its size and weight are significant benefits for photographers who are often on the move. Conversely, the High-Power 420-1600mm lens is larger and heavier due to its extended zoom capabilities. While it provides a greater focal length, its design may not be as convenient for casual or everyday use, particularly when traveling or hiking.

Zoom Capabilities

The zoom capabilities of each lens are one of their most distinguishing features. The Canon RF75-300mm offers a zoom range of 300mm, which is adequate for most photography needs, including portraits and landscape shots. On the other hand, the High-Power 420-1600mm lens boasts an extensive range from 420mm to 1600mm, making it a powerhouse for capturing distant subjects. This significant difference in focal length allows the High-Power lens to excel in scenarios where detail is paramount, such as wildlife photography or distant landscapes.

Compatibility

Compatibility is another area where these two lenses differ significantly. The Canon RF75-300mm is specifically designed for Canon EOS R series cameras, limiting its use to newer mirrorless models. The High-Power 420-1600mm lens, however, is compatible with a broader range of Canon DSLR cameras, including popular models like the Rebel series and EOS 5D. This wide compatibility can be a deciding factor for photographers who own various Canon cameras and want a lens that can work across multiple systems.

Image Quality

Both lenses promise impressive image quality, but they employ different technologies to achieve this. The Canon RF75-300mm lens features advanced autofocus capabilities, including eye detection at the 300mm zoom range, which is great for capturing moving subjects with precision. In contrast, the High-Power 420-1600mm lens emphasizes manual focus, which allows for greater control but may require more skill from the photographer. The f/8.3 aperture of the High-Power lens is also worth noting, as it ensures clarity and detail in well-lit conditions, although it may struggle in lower light settings compared to the RF75-300mm's superior autofocus features.

Accessories and Add-ons

The Canon RF75-300mm comes with useful accessories, including a UV filter, a lens cap keeper, and a cleaning kit, enhancing its overall value at $239.00. These additional items are beneficial for maintaining the lens and ensuring optimal performance. In contrast, the High-Power 420-1600mm lens does not mention any included accessories, which may require extra investment for filters or cleaning tools. This difference in included items can sway buyers who are looking for a complete package right out of the box.

Which should you buy?

The decision between the Canon RF75-300mm F4-5.6 Zoom Lens and the High-Power 420-1600mm lens largely depends on your specific needs and camera compatibility. If you own a Canon EOS R series camera and value portability, versatility, and quick autofocus, the Canon RF75-300mm lens is the better option. However, if you're looking for a more budget-friendly option with extensive zoom capabilities and compatibility with multiple Canon DSLR models, the High-Power 420-1600mm lens is an excellent choice. Ultimately, consider how you plan to use the lens and which features are most important for your photography style.