When it comes to DSLR camera lenses, photographers often find themselves torn between prime lenses and zoom lenses. Two popular options in this category are the Nikon AF-S 35mm f/1.8G and the Sigma 18-35mm f/1.8 DC HSM Art. While both lenses offer exceptional image quality and a wide aperture of f/1.8, they cater to different needs and shooting styles.

The Nikon AF-S 35mm f/1.8G is a prime lens, meaning it has a fixed focal length of 35mm. This lens is designed for Nikon's FX-format DSLR cameras, but it can also be used on DX-format cameras with a 1.5x crop factor, resulting in a 52.5mm equivalent focal length. The 35mm focal length is ideal for everyday photography, including portraits, street photography, and landscapes. The wide aperture of f/1.8 allows for a shallow depth of field, making it perfect for isolating subjects from the background.

On the other hand, the Sigma 18-35mm f/1.8 DC HSM Art is a zoom lens that covers a range of focal lengths from 18mm to 35mm. This lens is designed for APS-C DSLR cameras, which means it's compatible with Nikon's DX-format cameras. The 18-35mm zoom range makes it an excellent choice for photographers who need versatility in their lens. Whether you're shooting landscapes, portraits, or indoor events, this lens can adapt to various situations.

One of the key differences between these two lenses is their optical design. The Nikon AF-S 35mm f/1.8G has a simpler design with 7 elements in 5 groups, whereas the Sigma 18-35mm f/1.8 DC HSM Art has a more complex design with 17 elements in 12 groups. Despite its complexity, the Sigma lens is able to maintain excellent image quality throughout its zoom range.

In terms of autofocus performance, both lenses are equipped with fast and quiet motors. The Nikon AF-S 35mm f/1.8G uses Nikon's Silent Wave Motor (SWM) technology, while the Sigma 18-35mm f/1.8 DC HSM Art uses Sigma's Hyper Sonic Motor (HSM) technology. Both systems provide smooth and accurate autofocus, making them suitable for a variety of applications.

Another important aspect to consider is the build quality and durability of these lenses. The Nikon AF-S 35mm f/1.8G has a compact and lightweight design, weighing in at approximately 305g. It's also built with a durable plastic barrel and a metal lens mount. The Sigma 18-35mm f/1.8 DC HSM Art, on the other hand, is slightly larger and heavier, weighing around 810g. However, it features a more premium build quality with a brass lens mount and a TSC (Thermally Stable Composite) material.

When it comes to price, the Nikon AF-S 35mm f/1.8G is generally more affordable than the Sigma 18-35mm f/1.8 DC HSM Art. The Nikon lens typically retails for around $200-$300, while the Sigma lens costs between $500-$700.

In conclusion, both the Nikon AF-S 35mm f/1.8G and the Sigma 18-35mm f/1.8 DC HSM Art are exceptional DSLR camera lenses that offer outstanding image quality and a wide aperture of f/1.8. The choice between these two lenses ultimately depends on your personal preferences and shooting style. If you prefer a prime lens with a fixed focal length and a more compact design, the Nikon AF-S 35mm f/1.8G may be the better option. However, if you need a zoom lens with a versatile focal length range and are willing to invest in a higher-quality build, the Sigma 18-35mm f/1.8 DC HSM Art is an excellent choice.