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Canon RF-S18- vs Tamron 70-

Updated July 2026 — Canon RF-S18- wins on stabilization and autofocus, Tamron 70- wins on weight and length.

The Canon RF-S18-150mm offers superior image stabilization and versatility, while the Tamron 70-300mm excels in portability and price.

Why Canon RF-S18- is better

Image Stabilization

Canon offers up to 6.5 stops of stabilization.

Versatility

Canon has a wider zoom range for various photography styles.

Autofocus

Canon's STM is optimized for quiet video shooting.

Why Tamron 70- is better

Price

Tamron is $170 cheaper.

Weight

Tamron is lighter at 19.2 oz.

Compact Size

Tamron measures 5.8 inches in length.

Overall score

Canon RF-S18-
85
Tamron 70-
75

Specifications

SpecCanon RF-S18-Tamron 70-
Price$569.00$399.00
Zoom18-150mm70-300mm
WeightNot specified19.2 oz
Stabilization4.5-6.5 stopsNone specified
AutofocusLead screw-type STMRXD

Dimension comparison

Canon RF-S18-Tamron 70-

Overview of the Canon RF-S18-150mm and Tamron 70-300mm

The Canon RF-S18-150mm F3.5-6.3 Telephoto Lens is priced at $569.00, while the Tamron 70-300mm F/4.5-6.3 Di III RXD is available for $399.00, making it about 17% cheaper than its Canon counterpart. Both lenses cater to different user needs, with the Canon focusing on versatility in creative photography and video, while the Tamron emphasizes lightweight portability and high-quality imaging for a variety of shooting scenarios.

Design and Portability

The Tamron 70-300mm is designed with supreme lightweight portability in mind, weighing only 19.2 oz and measuring 5.8 inches in length. This makes it easy to handle for extended periods, especially during outdoor shooting sessions. In contrast, while the Canon RF-S18-150mm is not specified for weight, its design is optimized for use with APS-C cameras, providing a slightly bulkier feel but still remaining manageable for everyday use. The Tamron lens's compact size can be especially beneficial for photographers on the move, such as wildlife or sports photographers who require agility.

Zoom Range and Versatility

The Canon RF-S18-150mm offers a zoom range of 18-150mm, providing a standard-angle to telephoto capability ideal for various photography styles. This versatility allows for seamless transitions between wide landscapes and close-up portraits. Meanwhile, the Tamron 70-300mm boasts a broader zoom range of 70-300mm, ultimately giving users a more extensive telephoto capability. This makes the Tamron lens particularly suited for distant subjects, such as wildlife and sports photography, where capturing detail from afar is essential.

Image Stabilization

When it comes to image stabilization, the Canon RF-S18-150mm features in-lens optical image stabilization with up to 4.5 stops of shake correction, which can increase to 6.5 stops when paired with specific EOS R series cameras featuring In-Body Image Stabilizer (IBIS). This is a significant advantage for shooting in low-light conditions or at slower shutter speeds. On the other hand, the Tamron 70-300mm does not specifically mention image stabilization, which may affect its performance in similar conditions, although it is engineered for high resolution and bokeh quality.

Autofocus System

The Canon RF-S18-150mm incorporates a lead screw-type stepping motor (STM) for smooth and quiet autofocusing, making it an excellent choice for video recording where sound disturbance could be an issue. This feature enhances the overall shooting experience, especially in quiet environments. The Tamron 70-300mm employs the RXD (Rapid eXtra-silent stepping Drive), which is also designed for quiet operation but focuses more on high-speed precision. Both lenses cater to photographers who prioritize autofocus performance, but the Canon may have a slight edge in quiet video applications.

Target Audience and Use Cases

The Canon RF-S18-150mm is designed for creative photographers and videographers who need an all-around lens for various shooting scenarios, from landscapes to portraits. Its automatic APS-C sensor cropping capability when used on full-frame EOS R cameras further enhances its versatility. In contrast, the Tamron 70-300mm is aimed at photographers of all skill levels who seek a lightweight lens for action, wildlife, and sports photography, as well as casual snapshots. Each lens speaks to different user demographics, depending on their specific needs and preferences.

Price and Value

The Tamron 70-300mm is priced at $399.00, which is significantly more accessible than the Canon RF-S18-150mm at $569.00. This price difference of $170 represents a considerable saving, making the Tamron a more attractive option for budget-conscious photographers seeking a telephoto lens without sacrificing quality. However, the value of the Canon lens may justify its higher price for those who prioritize advanced image stabilization and a versatile zoom range for creative endeavors.

Which should you buy?

Choosing between the Canon RF-S18-150mm and the Tamron 70-300mm ultimately depends on your photographic needs and budget. If you are looking for a versatile lens that excels in both photography and videography with advanced stabilization features, the Canon RF-S18-150mm is a solid choice. However, if lightweight portability and a longer zoom range are your priorities, especially for wildlife or sports photography, the Tamron 70-300mm offers exceptional value at a lower price point. Consider your shooting style, intended use, and budget to make the best decision for your photography journey.