Sigma 24- vs Tamron 70-
Updated July 2026 — Sigma 24- wins on aperture and build quality, Tamron 70- wins on weight and portability.
The Sigma 24-70mm F2.8 DGDN II excels in versatility and image sharpness, while the Tamron 70-300mm offers a lightweight telephoto option at a lower price.
Why Sigma 24- is better
Image Quality
Higher sharpness throughout the image.
Versatility
Suitable for various photography styles.
Aperture
Larger constant aperture for low light.
Why Tamron 70- is better
Price
Significantly cheaper option.
Portability
Lighter and more compact design.
Weather Resistance
Moisture-resistant construction.
Overall score
Specifications
| Spec | Sigma 24- | Tamron 70- |
|---|---|---|
| Price | $1319.00 | $399.00 |
| Max Aperture | F2.8 | F4.5-6.3 |
| Focal Length | 24-70mm | 70-300mm |
| Image Quality | High sharpness | Good quality |
| Weather Sealing | No | Yes |
Dimension comparison
Overview of the 24-70mm F2.8 DGDN II for Sony E and Tamron 70-300mm F/4.5-6.3 Di III RXD
The 24-70mm F2.8 DGDN II for Sony E is a versatile lens with a constant aperture of F2.8, while the Tamron 70-300mm F/4.5-6.3 Di III RXD offers a longer telephoto range. This significant difference in focal length affects their suitability for various photography styles. The Sigma lens retails for $1,319.00, making it about 230% more expensive than the Tamron, which is priced at $399.00. This price disparity indicates that each lens targets different segments of the photography market and fulfills distinct needs.
Image Quality Comparison
The Sigma 24-70mm F2.8 DGDN II is praised for its high sharpness throughout the entire image, making it an excellent choice for photographers who prioritize clarity and detail. On the other hand, the Tamron 70-300mm F/4.5-6.3 Di III RXD boasts uncompromising image quality with a complex design of 15 elements in 10 groups, which helps correct chromatic aberration and other distortions. Both lenses deliver impressive image quality, but the Sigma lens excels in sharpness, especially in lower light conditions due to its larger aperture.
Focal Length Versatility
With a focal length ranging from 24mm to 70mm, the Sigma lens is ideal for a variety of photography types, including landscapes, portraits, and street photography. In contrast, the Tamron 70-300mm provides a substantial telephoto range, equivalent to 105-450mm on APS-C cameras, making it more suited for capturing distant subjects like wildlife or sports events. The versatility of the Sigma lens may appeal to those looking for an all-in-one solution, while the Tamron lens caters to those who need a longer reach.
Portability and Design
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 a practical choice for photographers who prioritize mobility and ease of handling. The Sigma 24-70mm, while slightly heavier, still offers a compact design, but it is not as lightweight as the Tamron. For travel photographers or anyone who enjoys shooting handheld, the Tamron's design may be a significant advantage.
Autofocus Performance
Both lenses feature advanced autofocus systems, but the Tamron incorporates the RXD (Rapid eXtra-silent stepping Drive) unit, which is known for its high-speed precision and quiet operation. This makes it particularly suitable for capturing candid moments without disturbing the subject. The Sigma lens, while not specifically noted for its autofocus technology, is still expected to perform well given its professional-grade build. However, those who prioritize a silent autofocus system may lean towards the Tamron.
Weather Resistance
The Tamron 70-300mm is designed with moisture-resistant construction, making it suitable for outdoor shooting in various weather conditions. This feature adds a layer of durability and reassurance for photographers who often shoot in unpredictable environments. The Sigma 24-70mm does not explicitly mention weather sealing, which could be a consideration for those who frequently find themselves in challenging weather.
Price vs. Performance
The price difference between the two lenses is substantial, with the Tamron being priced at $399.00, which is about 70% cheaper than the Sigma lens at $1,319.00. This makes the Tamron an attractive option for budget-conscious photographers or those just starting in the field. However, the Sigma's higher price may be justified by its superior sharpness and versatility, appealing to professionals or serious enthusiasts who require high-quality performance.
Which should you buy?
In conclusion, the decision between the Sigma 24-70mm F2.8 DGDN II and the Tamron 70-300mm F/4.5-6.3 Di III RXD ultimately depends on your specific photography needs. If you require a versatile lens with high sharpness for various scenarios, the Sigma is the clear choice. However, if you are looking for a lightweight and affordable telephoto option that excels in long-distance shooting, the Tamron is an excellent alternative. Both lenses have unique strengths that cater to different types of photographers, making either a worthwhile addition to your gear.

