SIGMA 18- vs TTartisan
Updated July 2026 — SIGMA 18- wins on versatility and build, TTartisan wins on price and size.
The Sigma 18-50mm lens offers superior versatility and performance, while the TTartisan 27mm lens excels in portability and affordability.
Why SIGMA 18- is better
Versatility
Sigma offers a zoom range of 18-50mm.
Build Quality
Sigma features a rubber-sealed mount.
Autofocus
Sigma has advanced autofocus capabilities.
Why TTartisan is better
Price
TTartisan is significantly cheaper at $159.99.
Portability
TTartisan has a pancake design for easy carrying.
Simplicity
TTartisan is ideal for casual photographers.
Overall score
Specifications
| Spec | SIGMA 18- | TTartisan |
|---|---|---|
| Focal Length | 18-50mm | 27mm |
| Aperture | F2.8 | F2.8 |
| Compatibility | Canon RF | Fuji X-Mount |
| Max Magnification | 1:2.8 | N/A |
| Minimum Focus | 12.1cm | N/A |
Dimension comparison
Overview of the Sigma 18-50mm and TTartisan 27mm Lenses
The Sigma 18-50mm F2.8 DC DN Contemporary Lens is priced at $599.99, while the TTartisan 27mm F2.8 Autofocus Lens is significantly more affordable at $159.99, making it about 73% cheaper. This substantial price difference reflects the varying features and intended uses of these two lenses, catering to different types of photographers and videographers.
The Sigma lens is designed for Canon RF mount mirrorless cameras, offering a versatile zoom range suitable for various photographic situations. In contrast, the TTartisan lens is a compact prime lens compatible with Fuji X-mount cameras, ideal for everyday shooting and portability. Each lens has its unique strengths, appealing to different segments of the photography market.
Build Quality and Design
When it comes to build quality and design, the Sigma 18-50mm lens boasts a rubber-sealed mount, allowing it to perform well in various environmental conditions. Its lightweight and compact design, with a maximum diameter of 69.2mm and a weight of 300g, makes it easy to carry without sacrificing performance.
On the other hand, the TTartisan 27mm lens is designed with portability in mind, featuring a pancake form factor that measures less than 3cm thick. This makes it incredibly easy to carry anywhere, perfect for street and travel photography. While both lenses are built with usability in mind, the Sigma lens offers more ruggedness for outdoor shooting, whereas the TTartisan lens excels in everyday convenience.
Focal Length and Versatility
The Sigma 18-50mm lens offers a versatile zoom range that allows photographers to capture wide-angle shots at 18mm and zoom in to 50mm for portraiture, making it suitable for a diverse array of shooting situations. The 1:2.8 maximum magnification and close-up capability at a minimum focusing distance of 12.1cm add to its versatility, making it an excellent choice for photographers who require a multi-functional lens.
In contrast, the TTartisan 27mm lens provides a 41mm equivalent focal length, which is ideal for various genres, including street, travel, and close-up photography. However, it lacks the zoom functionality found in the Sigma lens. While both lenses serve different purposes, the Sigma’s zoom range offers greater adaptability, while the TTartisan's fixed focal length encourages creativity in composition.
Aperture and Low Light Performance
The Sigma 18-50mm lens features a constant maximum aperture of F2.8 throughout its zoom range, allowing for consistent performance in low-light conditions. This is particularly beneficial for photographers who need to maintain exposure settings while adjusting focal length.
The TTartisan 27mm lens also has a bright F2.8 maximum aperture, which supports low-light shooting and offers greater control over depth of field. This lens, however, is limited to its fixed focal length, which might require photographers to move closer or further away from their subjects. Both lenses perform well in low-light scenarios, but the Sigma lens may provide more flexibility due to its zoom capabilities.
Autofocus and Usability
The Sigma 18-50mm lens is engineered for high performance, offering quick and reliable autofocus that is essential for capturing fast-moving subjects. Its usability is enhanced by its lightweight design, making it an excellent option for both casual and professional photographers.
Conversely, the TTartisan 27mm lens includes an autofocus feature along with manual focus override, which allows for greater creative control. The aperture ring enables easy adjustments from F2.8 to F16, facilitating seamless transitions between different lighting conditions. While both lenses prioritize ease of use, the Sigma's advanced autofocus system is likely to appeal more to those needing rapid focus adjustments in dynamic environments.
Target Audience
The Sigma 18-50mm lens is targeted towards professional photographers and enthusiasts who require high-quality optics and versatility in their gear. Its robust feature set and adaptable zoom range make it a suitable choice for a wide range of photography styles, including landscapes, portraits, and events.
In contrast, the TTartisan 27mm lens is aimed at casual photographers and travelers who prioritize compactness and simplicity. Its lightweight design and ease of use make it an attractive option for those who want a reliable lens for everyday shooting without the complexity of a zoom system. Each lens caters to its unique audience, reflecting the distinct needs of different types of photographers.
Price and Value Proposition
The Sigma 18-50mm lens is priced at $599.99 and is primarily positioned as a high-end option for serious photographers. In comparison, the TTartisan 27mm lens is priced at $159.99, making it a more accessible choice for those on a budget or those who do not require the advanced features of a higher-priced lens.
For the price, the TTartisan lens offers excellent value, particularly considering its compact design and performance. The Sigma lens, while more expensive, justifies its price with a wider focal range and superior build quality. Depending on the user’s needs and budget, each lens presents a compelling value proposition.
Which should you buy?
Choosing between the Sigma 18-50mm and the TTartisan 27mm lenses ultimately depends on your specific photography needs and budget. If you require versatility and superior performance for various shooting scenarios, the Sigma lens is a strong contender. However, if you prioritize portability and affordability for everyday photography, the TTartisan lens offers exceptional value and usability. Each lens has its strengths, so the decision should reflect your personal style and requirements in photography.

