Sigma 10- vs Sigma 17-
Updated July 2026 — Sigma 10- wins on size and aperture, Sigma 17- wins on price and weight.
The Sigma 10-18mm F2.8 DC DN offers excellent value for wide-angle photography, while the Sigma 17-40mm F1.8 DC excels in low-light conditions.
Why Sigma 10- is better
Price
10-18mm is $679.00, cheaper than 17-40mm at $919.00.
Portability
10-18mm is the smallest and lightest ultra-wide-angle lens.
Versatility
10-18mm is ideal for landscapes and video.
Why Sigma 17- is better
Aperture
17-40mm has a constant F1.8 aperture for low-light performance.
Optics
Art-series optics in 17-40mm provide superior image quality.
Depth Effects
17-40mm excels in creating depth-of-field effects.
Overall score
Specifications
| Spec | Sigma 10- | Sigma 17- |
|---|---|---|
| Focal Length | 10-18mm | 17-40mm |
| Aperture | F2.8 | F1.8 |
| Weight | Light | Moderate |
| Image Quality | Sharp | Very Sharp |
| Use Case | Landscapes | Versatile |
Dimension comparison
Overview of the 10-18mm F2.8 DC DN and Sigma 17-40mm F1.8 DC
The Sigma 10-18mm F2.8 DC DN is priced at $679.00, while the Sigma 17-40mm F1.8 DC comes at a higher price of $919.00, making the former about 26% cheaper. Both lenses are designed for Sony E-mount APS-C cameras, but they cater to different photography styles and needs. The 10-18mm is ideal for expansive landscapes and content creation, while the 17-40mm is tailored for low-light conditions and creative depth effects.
Image Quality and Aperture Performance
The Sigma 17-40mm F1.8 DC features a constant aperture of F1.8, which allows for superior performance in low-light situations and provides the ability to create beautiful depth-of-field effects. In contrast, the 10-18mm F2.8 DC DN, while also offering a substantial aperture, is slightly less capable in low-light scenarios but excels in capturing wide-angle shots with expressive imaging. Both lenses deliver sharp detail, but the Art-series optics of the 17-40mm may offer a slight edge in professional image quality.
Versatility and Use Cases
The 10-18mm F2.8 DC DN is perfect for a variety of applications, including landscapes, travel photography, and video production. Its ultra-wide-angle capability allows for creative compositions and dynamic shots. Conversely, the Sigma 17-40mm F1.8 DC is designed with versatility in mind, suitable for portraits, travel, and video as well, but it shines particularly in low-light environments due to its faster aperture. This makes it a more flexible choice for photographers who often work in diverse lighting conditions.
Size and Portability
The Sigma 10-18mm F2.8 DC DN is noted for being the world's smallest and lightest ultra-wide-angle zoom lens for APS-C cameras, making it an excellent choice for travel and on-the-go shooting. Its compact size enhances portability, which is a significant advantage for photographers looking to minimize their gear. The 17-40mm F1.8 DC, while not excessively large, may not match the ultra-compact design of the 10-18mm, potentially impacting ease of transport for those who prioritize lightweight gear.
Build Quality and Design
Both lenses are engineered by Sigma, known for their commitment to quality. The 17-40mm F1.8 DC belongs to Sigma's Art series, which is renowned for its high-end optics and robust construction, ensuring professional-grade performance. The 10-18mm F2.8 DC DN, while also well-constructed, focuses more on lightweight design and portability. If build quality and professional optics are paramount, the 17-40mm may be the preferred option.
Target Audience
The Sigma 10-18mm F2.8 DC DN primarily appeals to videographers and photographers focused on landscapes and online content creation. Its expressive imaging capabilities are designed for those who want to capture wide vistas and dynamic scenes. On the other hand, the 17-40mm F1.8 DC caters to photographers who prioritize versatility and quality, especially in low-light scenarios. This lens would be more appealing to portrait photographers or those who want a reliable all-rounder for various conditions.
Price Comparison and Value
At a price of $679.00, the Sigma 10-18mm F2.8 DC DN presents a compelling value for those needing an ultra-wide-angle lens. The 17-40mm F1.8 DC, priced at $919.00, is significantly more expensive, coming in at about 36% higher. The price difference reflects the distinct features each lens offers, with the 17-40mm providing advanced optics for low-light conditions, which may justify its higher cost for certain photographers. However, for general use and landscape photography, the 10-18mm offers excellent value.
Which should you buy?
Ultimately, the choice between the Sigma 10-18mm F2.8 DC DN and the Sigma 17-40mm F1.8 DC depends on your specific needs. If you require a lightweight, ultra-wide-angle lens for landscapes and video work, the 10-18mm is the better option at a lower price point. However, if you're looking for a versatile lens that performs well in various lighting conditions and offers professional image quality, the 17-40mm may be worth the investment despite its higher cost. Each lens serves a unique purpose, catering to different styles of photography, making your choice crucial based on your shooting preferences.

