SIGMA 18- vs TTArtisan Auto Focus
Updated July 2026 — SIGMA 18- leads on weight and focal length.
The SIGMA lens offers greater versatility and build quality, while the TTArtisan lens excels in affordability and low-light performance.
Why SIGMA 18- is better
Versatility
SIGMA offers a zoom range of 18-50mm.
Build Quality
SIGMA has a rubber-sealed mount for durability.
Focusing Distance
SIGMA allows for close-up shots with a maximum magnification of 1:2.8.
Why TTArtisan Auto Focus is better
Price
TTArtisan is significantly cheaper at $125.
Weight
TTArtisan is lighter at 176g.
Aperture
TTArtisan has a larger maximum aperture of F1.8.
Overall score
Specifications
| Spec | SIGMA 18- | TTArtisan Auto Focus |
|---|---|---|
| Zoom Type | Yes | No |
| Autofocus | Yes | Yes |
| Compatibility | Canon RF | Fuji X |
| Bokeh | Moderate | Excellent |
| Close-Up | Yes | Yes |
Dimension comparison
Overview of the Products
The SIGMA 18-50mm F2.8 DC DN Contemporary Lens is designed for Canon RF mount mirrorless cameras, while the TTArtisan Auto Focus 35mm F1.8 Mark II APS-C Lens is tailored for Fuji X-mount cameras. Both lenses cater to different types of photography, with the SIGMA focusing on versatility with its zoom range and the TTArtisan emphasizing a prime lens experience with a fast aperture. The price difference is substantial, with the SIGMA priced at $599.99 and the TTArtisan at $125.00, making the latter approximately 79% cheaper.
Design and Build Quality
The SIGMA 18-50mm lens boasts a compact and lightweight design, weighing only 300g and measuring 69.2mm in diameter and 74.5mm in length. Its rubber-sealed mount enhances durability, making it suitable for various shooting environments. In contrast, the TTArtisan lens is even lighter at 176g due to its recent design update, making it easier to carry for extended periods. While both lenses are compact, the TTArtisan's smaller size adds to its appeal for travel and everyday photography.
Aperture and Low-Light Performance
The SIGMA 18-50mm features a constant aperture of F2.8, which provides decent low-light performance and flexibility in shooting conditions. However, the TTArtisan excels in this area with a larger maximum aperture of F1.8. This wider aperture not only allows more light to enter the lens, making it advantageous for low-light situations, but also creates stunning bokeh effects that enhance portrait photography. Photographers who prioritize low-light capabilities will find the TTArtisan more appealing.
Focusing and Autofocus Features
Both lenses offer distinct advantages in focusing capabilities. The SIGMA lens features a minimum focusing distance of 12.1cm, allowing for close-up shots with a maximum magnification of 1:2.8. This is beneficial for capturing detailed subjects. On the other hand, the TTArtisan lens has improved its minimum focusing distance to 0.4m, allowing for even closer shots. Additionally, the TTArtisan includes advanced autofocus technology, featuring a lead screw-type stepping motor for smoother and quieter operation. This ensures that photographers can capture sharp images quickly and effectively.
Versatility and Use Cases
The SIGMA 18-50mm lens, with its zoom range of 18-50mm, offers significant versatility for various photography styles, from landscapes to portraits. This makes it an excellent choice for photographers who want a single lens to cover a broad spectrum of shooting scenarios. Conversely, the TTArtisan's 35mm focal length is ideal for portraiture and street photography, providing an equivalent full-frame focal length of 53mm. While less versatile in terms of zoom, it excels in specific applications, particularly in creating artistic portraits.
Price Comparison
When it comes to pricing, the difference is stark. The SIGMA 18-50mm lens is priced at $599.99, whereas the TTArtisan 35mm lens is available for just $125.00. This means the TTArtisan is about 79% cheaper than the SIGMA lens. For budget-conscious photographers or those just starting, the TTArtisan presents a compelling value without sacrificing quality in its specific use cases. The significant price gap could influence purchasing decisions, especially for those who may not need the versatility offered by the SIGMA lens.
Compatibility and Camera Systems
Compatibility is a crucial factor when choosing a lens. The SIGMA 18-50mm F2.8 is specifically designed for Canon RF mount mirrorless cameras, making it an excellent choice for users of Canon's latest systems. In contrast, the TTArtisan 35mm F1.8 is tailored for a range of Fuji X-mount cameras, including models like the X-A2, X-T4, and others. Photographers must consider their camera system when deciding between these two options, as each lens will only function with its respective brand's mount.
Which should you buy?
The decision between the SIGMA 18-50mm F2.8 DC DN Contemporary Lens and the TTArtisan Auto Focus 35mm F1.8 Mark II APS-C Lens ultimately boils down to user needs and budget. If you require a versatile zoom lens that performs well in various situations and are willing to invest, the SIGMA is a solid choice. However, if you're looking for an affordable, lightweight lens that excels in portrait and low-light photography, the TTArtisan is an excellent selection. Given the significant price difference, many photographers will find the TTArtisan to be a more sensible investment, especially if the specific focal length suits their style.

