Big Mike's High-Power 420- vs Tamron 18-
Updated July 2026 — Big Mike's High-Power 420- wins on length and zoom range, Tamron 18- wins on build quality and max aperture.
The High-Power lens offers extreme zoom capabilities at a budget-friendly price, while the Tamron lens provides versatility and advanced features for a higher cost.
Why Big Mike's High-Power 420- is better
Price
High-Power lens is significantly cheaper at $139.99.
Zoom Range
Offers up to 1600mm with a teleconverter.
Compatibility
Designed for a wide range of Canon cameras.
Why Tamron 18- is better
Autofocus
Features fast and precise VXD autofocus.
Image Stabilization
Includes VC technology to reduce blur.
Build Quality
Compact, moisture-resistant design.
Overall score
Specifications
| Spec | Big Mike's High-Power 420- | Tamron 18- |
|---|---|---|
| Price | $139.99 | $599.00 |
| Max Focal Length | 1600mm | 300mm |
| Min Focal Length | 420mm | 18mm |
| Autofocus | Manual | VXD |
| Image Stabilization | No | Yes |
| Compatibility | Canon | Sony |
Dimension comparison
Overview of the Products
The High-Power 420-1600mm f/8.3 HD Manual Telephoto Zoom Lens for Canon EOS 70D is priced at $139.99, while the Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD Lens for Sony E APS-C Mirrorless Cameras costs $599.00. This represents a significant price difference of about 329%, with the Canon lens being much more budget-friendly. However, the Tamron lens boasts a versatile zoom range and advanced autofocus technology that may justify its higher price for certain users.
Zoom Capabilities
The High-Power 420-1600mm lens offers an impressive zoom capability, allowing photographers to reach up to 1600mm with its 2X teleconverter. This makes it ideal for capturing distant subjects like wildlife or sports. In contrast, the Tamron lens covers a zoom range from 18mm to 300mm, equivalent to 27mm to 450mm in full-frame terms. While the Tamron lens is versatile for everyday shooting, the sheer range of the Canon lens caters to specialized long-distance photography.
Compatibility
The High-Power lens is designed specifically for a wide range of Canon cameras, including models like the EOS 70D, 80D, and 90D, among others. On the other hand, the Tamron lens is tailored for Sony E APS-C mirrorless cameras. This specificity means that the choice between these products largely hinges on the user's camera system. If you own a Canon camera, the High-Power lens is the clear choice; for Sony users, Tamron's offering is the way to go.
Autofocus and Ease of Use
The Tamron lens features a VXD linear motor focus mechanism, which provides fast and precise autofocus, enhancing usability for both still photography and video. The High-Power lens, however, is a manual focus lens, which requires more skill and patience to use effectively. While the manual focus may appeal to photographers looking for more control, it can be a drawback for those who prefer the convenience of autofocus, particularly in dynamic shooting environments.
Build Quality and Design
The Tamron lens is designed with a compact and portable build, measuring 4.9 x 2.9 inches and weighing 21.9 ounces. It also boasts moisture-resistant construction and a fluorine coating, which adds to its durability in various shooting conditions. Conversely, while the High-Power lens is built for longevity, its specifications do not mention any special weather sealing features, making it potentially less robust in challenging environments.
Image Stabilization
The Tamron lens includes Vibration Compensation (VC) technology to minimize image blur from camera shake, which is particularly valuable in low-light conditions or when shooting at longer focal lengths. The High-Power lens does not mention any image stabilization features, meaning that users may need to rely on steady hands or a tripod to achieve the best results. This difference could significantly impact shooting in less-than-ideal circumstances.
Price Comparison
The High-Power lens is priced at $139.99, making it a much more affordable option compared to the Tamron lens, which is priced at $599.00. This price difference of approximately $459.01 may appeal to budget-conscious photographers or those just starting in telephoto photography. However, the cost should also be weighed against the features and capabilities of each lens, which may justify a higher investment for some users.
Which should you buy?
Deciding between the High-Power 420-1600mm lens and the Tamron 18-300mm lens ultimately hinges on your specific photography needs and camera compatibility. If you prioritize extreme zoom capabilities and are working with a Canon camera, the High-Power lens is a remarkable value at $139.99. However, if you own a Sony APS-C mirrorless camera and seek a versatile all-in-one lens with advanced autofocus and image stabilization, the Tamron lens, despite its higher price of $599.00, may provide the performance enhancements that justify the investment. Each lens serves different styles of photography, making the choice a matter of personal preference and intended use.

