Tamron 18- vs Tamron 70-
Updated July 2026 — Tamron 18- wins on zoom ratio and weight, Tamron 70- wins on mod and length.
The Tamron 18-300mm offers superior versatility and macro capabilities, while the 70-300mm is a more budget-friendly telephoto option.
Why Tamron 18- is better
Zoom Range
18-300mm offers a 16.6x zoom.
Macro Capability
MOD of 5.9 inches for close-ups.
Versatility
Ideal for various shooting scenarios.
Why Tamron 70- is better
Price
$399.00 is 33% cheaper.
Weight
Lighter at 19.2 ounces.
Telephoto Use
Better for dedicated telephoto photography.
Overall score
Specifications
| Spec | Tamron 18- | Tamron 70- |
|---|---|---|
| Autofocus | VXD | RXD |
| Image Quality | High | Very Good |
| Moisture Resistance | Yes | Yes |
| Field of View | 27-450mm | 105-450mm |
| Construction | Compact | Lightweight |
Dimension comparison
Overview
When choosing between the Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD Lens and the Tamron 70-300mm F/4.5-6.3 Di III RXD, it’s essential to understand their key distinctions. The first lens offers a remarkable 16.6x zoom range, making it ideal for versatile photography, while the second lens focuses on providing superior telephoto capabilities at a more affordable price point.
Price Comparison
The Tamron 18-300mm is priced at $599.00, while the Tamron 70-300mm costs $399.00, making the latter about 33% cheaper. This price difference can be significant for photographers on a budget or those looking to invest in multiple lenses. While the 18-300mm offers an extensive zoom range, the 70-300mm provides excellent value for those who primarily shoot at longer focal lengths.
Zoom Range and Versatility
The Tamron 18-300mm boasts the world’s first 16.6x all-in-one zoom for APS-C mirrorless cameras, allowing photographers to capture everything from wide-angle landscapes to ultra-telephoto shots in one lens. In contrast, the Tamron 70-300mm focuses on a narrower zoom range but still covers a respectable 70-300mm (105-450mm equivalent on APS-C). If you seek versatility in shooting scenarios, the 18-300mm is the standout option, while the 70-300mm excels in dedicated telephoto use.
Autofocus Performance
When it comes to autofocus, the Tamron 18-300mm is equipped with the VXD linear motor focus mechanism, ensuring fast and precise autofocus performance. The Tamron 70-300mm features the RXD unit, which is also designed for quiet and efficient focusing. Both lenses provide high-quality autofocus, but the 18-300mm's advanced system may give it an edge in dynamic shooting situations, particularly for capturing moving subjects.
Image Quality
The Tamron 18-300mm is designed to maintain high resolving power from the center to the corners throughout its zoom range. It includes special optical elements to achieve this level of clarity. On the other hand, the Tamron 70-300mm utilizes 15 elements in 10 groups to provide uncompromising image quality while minimizing chromatic aberration. Both lenses deliver excellent image quality, but the 18-300mm’s edge-to-edge performance may be more appealing for those prioritizing overall sharpness.
Build Quality and Design
The Tamron 18-300mm has a compact design, measuring 4.9 x 2.9 inches and weighing 21.9 ounces, while the 70-300mm is slightly larger at 5.8 inches long and weighing 19.2 ounces. Both lenses feature moisture-resistant construction, making them suitable for outdoor shooting. The 18-300mm’s lighter weight and smaller size may be advantageous for travel photographers who need to carry their gear for extended periods.
Close-Up Capabilities
The Tamron 18-300mm shines in close-up photography with a minimum object distance (MOD) of 5.9 inches at 18mm and a maximum magnification ratio of 1:2. This makes it an excellent choice for macro photography enthusiasts. The Tamron 70-300mm, while also capable of up-close shooting, offers a MOD of 31.5 inches at its wide end and 59.1 inches at its telephoto end, making it less effective for intricate close-ups. For those who value macro capabilities, the 18-300mm is clearly the superior choice.
Intended Use and Target Audience
The Tamron 18-300mm lens is ideal for photographers looking for an all-in-one solution, perfect for travel and everyday use. It excels in various shooting environments, making it user-friendly for both amateurs and professionals. In contrast, the Tamron 70-300mm caters to those who wish to specialize in telephoto photography, such as wildlife, sports, and portraiture. Its lightweight design makes it accessible for photographers of all skill levels who want to capture distant subjects without heavy gear.
Which should you buy?
Ultimately, your choice between the Tamron 18-300mm and the Tamron 70-300mm will depend on your specific photographic needs. If you desire versatility and the ability to shoot in a variety of situations, the 18-300mm is worth the investment despite its higher price. However, if you primarily focus on telephoto photography and are looking for a more budget-friendly option, the 70-300mm offers excellent performance at a lower cost. Consider your shooting style and requirements before making a decision, as both lenses have unique strengths that cater to different types of photographers.

