Sigma vs TTArtisan 7.
Updated July 2026 — Sigma wins on focus and weight, TTArtisan 7. wins on price.
The Sigma 16mm f/1.4 offers superior low-light performance and autofocus capabilities, making it ideal for serious photographers, while the TTArtisan 7.5mm provides a more affordable option for creative fisheye shots.
Why Sigma is better
Low Light
Sigma has a larger aperture (f/1.4) for better low-light performance.
Autofocus
Sigma features fast Hybrid AF for smooth focusing.
Build Quality
Sigma is dust- and splash-proof for outdoor use.
Why TTArtisan 7. is better
Price
TTArtisan is significantly cheaper at $139.
Creative Use
TTArtisan offers a unique fisheye perspective.
Weight
TTArtisan is lighter and more portable.
Overall score
Specifications
| Spec | Sigma | TTArtisan 7. |
|---|---|---|
| Aperture | f/1.4 | f/2.0 |
| Focal Length | 16mm | 7.5mm |
| Autofocus | Yes | No |
| Weather Sealing | Yes | No |
| Price | $539.00 | $139.00 |
Dimension comparison
Overview of the Sigma 16mm f/1.4 and TTArtisan 7.5mm F2.0
The Sigma 16mm f/1.4 DC DN Contemporary Lens for Sony E and the TTArtisan 7.5mm F2.0 APS-C Large Aperture Lens offer two distinct approaches to photography, catering to varying needs and preferences. The Sigma lens is priced at $539.00, while the TTArtisan fisheye lens is significantly more affordable at $139.00, making it about 74% cheaper. This stark price difference reflects the unique features and capabilities each lens brings to the table.
Build Quality and Design
When it comes to build quality, the Sigma 16mm f/1.4 stands out with its dust- and splash-proof design, making it suitable for outdoor photography in challenging conditions. The compact size enhances its portability, an essential feature for photographers on the go. In contrast, the TTArtisan 7.5mm F2.0, while designed for everyday shooting, lacks specific mention of weather resistance, which may be a consideration for those shooting in unpredictable environments. The robust design of the Sigma lens makes it well-suited for event and nature photography, where durability can be paramount.
Aperture Performance
A crucial aspect of any lens is its aperture performance. The Sigma boasts a large f/1.4 aperture, offering superb low-light performance and allowing more light to enter the lens. This feature is especially beneficial for photographers looking to shoot in dimly lit conditions without sacrificing image quality. Conversely, the TTArtisan lens has a maximum aperture of f/2.0, which, while still adequate for various lighting situations, does not match the light-gathering capability of the Sigma. The wider aperture of the Sigma lens can lead to more creative possibilities, particularly in low-light scenarios.
Focal Length and Versatility
The Sigma 16mm lens is designed for wide-angle photography, making it ideal for landscapes, events, and nature shots. This versatility allows photographers to capture expansive scenes with ease. On the other hand, the TTArtisan 7.5mm lens, with its fisheye perspective, provides a unique viewpoint, creating a distinct look that can be particularly appealing for artistic and creative photography. However, its specialized nature may not be as versatile as the Sigma in everyday shooting situations.
Focus and Autofocus Capabilities
The Sigma lens features a fast Hybrid AF stepping motor, which ensures smooth autofocus during video shooting. This capability is particularly advantageous for videographers who require quick and precise focusing. In contrast, the TTArtisan lens does not highlight autofocus features, suggesting that it may rely on manual focus. This difference in focus capabilities could impact the usability of each lens depending on the photographer's style and needs. The Sigma's autofocus can be a decisive factor for those who prioritize convenience and speed.
Application and Use Cases
The Sigma 16mm f/1.4 is particularly well-suited for nature and event photography, allowing photographers to capture stunning images in various settings. Its wide aperture and excellent low-light performance make it ideal for capturing action and detail in challenging lighting conditions. The TTArtisan 7.5mm, while also versatile, excels in documentary and street photography, offering a unique perspective that can enhance storytelling through images. Both lenses cater to different styles, making their applications distinct yet complementary.
Price Comparison
With a price of $539.00, the Sigma lens is a significant investment compared to the TTArtisan's price of $139.00. This makes the TTArtisan about 74% cheaper. The price difference is reflective of the performance and features offered by each lens. While the Sigma provides superior low-light capabilities and autofocus, the TTArtisan offers affordability and artistic potential for those who may be starting or experimenting with fisheye photography. The financial aspect may heavily influence a buyer's decision based on their budget and intended use.
Which should you buy?
Ultimately, the choice between the Sigma 16mm f/1.4 and the TTArtisan 7.5mm F2.0 depends on your photography needs and budget. If you're looking for a high-performance lens with excellent low-light capabilities and autofocus for events and nature photography, the Sigma is the clear winner, albeit at a higher price point. However, if you're more interested in creative, artistic shots at a fraction of the cost, the TTArtisan is an appealing option. Both lenses have unique strengths, making them suitable for different types of photographers.

