Nikon NIKKOR Z 24- vs Sigma 17-
Updated July 2026 — Nikon NIKKOR Z 24- leads on price and focal length.
The Nikon NIKKOR Z 24-70mm f/2.8 S II offers superior performance and features, while the Sigma 17-40mm F1.8 DC is a more budget-friendly option.
Why Nikon NIKKOR Z 24- is better
Autofocus
Nikon's autofocus is 5x faster and 50% quieter.
Build Quality
Nikon has an internal zoom mechanism for better stability.
Image Quality
Nikon's bokeh is enhanced with 11 rounded diaphragm blades.
Why Sigma 17- is better
Price
Sigma is significantly cheaper at $919.
Aperture
Sigma has a wider constant aperture of f/1.8.
Weight
Sigma is lighter and more portable.
Overall score
Specifications
| Spec | Nikon NIKKOR Z 24- | Sigma 17- |
|---|---|---|
| Brand | Nikon | Sigma |
| Model | NIKKOR Z 24-70mm f/2.8 S II | 17-40mm F1.8 DC |
| Zoom Type | Internal | External |
| Mount Type | Nikon Z | Sony E |
| Max Magnification | 0.32x | 0.24x |
Dimension comparison
Overview of the Nikon NIKKOR Z 24-70mm f/2.8 S II and Sigma 17-40mm F1.8 DC
The Nikon NIKKOR Z 24-70mm f/2.8 S II is a high-performance zoom lens aimed at professional photographers, while the Sigma 17-40mm F1.8 DC is a versatile option designed for Sony E-mount APS-C cameras. The Nikon lens is priced at $2,796.95, making it significantly more expensive than Sigma's offering at $919.00. This substantial price difference reflects the advanced features and capabilities of the NIKKOR lens.
Design and Build Quality
The Nikon NIKKOR Z 24-70mm f/2.8 S II incorporates an internal zoom mechanism, enhancing its compactness and stability during use. This design allows for better dust and drip resistance, crucial for outdoor shooting conditions. On the other hand, the Sigma 17-40mm F1.8 DC is designed with Art-series optics, emphasizing sharp detail and professional image quality. While both lenses exhibit solid construction, the Nikon's internal zoom sets it apart, providing a unique advantage for users who prioritize stability and weather resistance.
Aperture and Low-Light Performance
When it comes to aperture, the Sigma 17-40mm F1.8 DC boasts a bright constant aperture of f/1.8, ideal for low-light scenarios and achieving creative depth effects. In contrast, the Nikon NIKKOR Z 24-70mm f/2.8 S II features a constant f/2.8 aperture, which, while excellent, does not match the Sigma's capability in extreme low-light conditions. The Sigma lens's wider aperture allows for more light, making it approximately 1.5 stops faster than the Nikon lens, which is a significant consideration for photographers who often shoot in dim environments.
Autofocus and Performance
The Nikon NIKKOR Z 24-70mm f/2.8 S II excels in autofocus performance, being 5 times faster and 50% quieter than its predecessor. This feature is especially beneficial for video recording, where operational sounds can disrupt audio quality. In comparison, the Sigma 17-40mm F1.8 DC is also designed for smooth operation, but specific autofocus performance metrics are not highlighted in its description. For users who prioritize fast and discreet autofocus, the Nikon lens offers a clear advantage, particularly in professional shooting settings.
Versatility and Use Cases
The Nikon NIKKOR Z 24-70mm f/2.8 S II is marketed as a versatile lens suitable for a wide range of professional applications, from portraits to landscapes. Its ability to focus as close as 9.5 inches at 24mm and achieve a maximum magnification of 0.32x at 70mm enhances its usability for various photography styles. Meanwhile, the Sigma 17-40mm F1.8 DC is tailored for Sony E-mount APS-C cameras, making it an excellent choice for travel and casual photography. Its focal length covers a useful range for landscapes and portraits, but it may not offer the same breadth of professional applications as the Nikon lens.
Image Quality and Bokeh
In terms of image quality, both lenses promise sharp detail, but the Nikon NIKKOR Z 24-70mm f/2.8 S II is designed to provide enhanced sharpness and bokeh due to its 11 rounded diaphragm blades. This design results in soft, round bokeh with natural gradation, making it a superior choice for portrait photography where background aesthetics are crucial. The Sigma 17-40mm F1.8 DC also produces impressive image quality but lacks the same level of bokeh control that the Nikon lens offers. For photographers who prioritize high-quality backgrounds and sharp subjects, the Nikon lens stands out.
Price Comparison
The pricing of these two lenses highlights a stark contrast in their market positioning. The Nikon NIKKOR Z 24-70mm f/2.8 S II retails for $2,796.95, making it about 204% more expensive than the Sigma 17-40mm F1.8 DC, which is priced at $919.00. While the Nikon lens justifies its higher price with advanced features and professional-grade performance, the Sigma lens presents a more budget-friendly option for enthusiasts and those seeking versatility without breaking the bank.
Which should you buy?
Choosing between the Nikon NIKKOR Z 24-70mm f/2.8 S II and the Sigma 17-40mm F1.8 DC ultimately depends on your specific needs and budget. If you require a professional-grade lens with exceptional autofocus performance, weather resistance, and superior image quality, the Nikon lens is worth the investment. However, if you are looking for a more affordable, versatile lens primarily for casual or travel photography, the Sigma lens offers great value without compromising too much on quality. Consider your shooting style and budget to make the best decision for your photography needs.

