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SIGMA 18- vs TTARTISAN

Updated July 2026 — SIGMA 18- leads on weight and length.

The SIGMA lens offers greater versatility and performance, while the TTARTISAN excels in portability and affordability.

Why SIGMA 18- is better

Versatility

SIGMA has a zoom feature for various shooting scenarios.

Performance

Higher quality performance in diverse conditions.

Compatibility

Designed for Canon RF Mount, popular among users.

Why TTARTISAN is better

Price

TTARTISAN is significantly cheaper.

Portability

Lighter and more compact design.

Low Light

Better performance in low light with f/2 aperture.

Overall score

SIGMA 18-
85
TTARTISAN
75

Specifications

SpecSIGMA 18-TTARTISAN
ZoomYesNo
Build MaterialPlasticAluminum
AutofocusStandardAdvanced
Max Magnification1:2.8N/A
Price$599.99$168.00

Dimension comparison

SIGMA 18-TTARTISAN

Introduction to the Lens Comparison

In the realm of photography, selecting the right lens can significantly impact your creative outcomes. This comparison focuses on two notable contenders: the SIGMA 18-50mm F2.8 DC DN Contemporary Lens for Canon RF Mount Mirrorless Cameras and the TTARTISAN 40mm f2 Lens for Z Mount. Both lenses cater to different shooting styles and preferences, making it essential to understand their features to make an informed choice.

Price and Value

The SIGMA 18-50mm lens is priced at $599.99, while the TTARTISAN 40mm lens is significantly more affordable at $168.00. This makes the TTARTISAN about 72% cheaper than the SIGMA. For budget-conscious photographers or those just starting, the lower price of the TTARTISAN presents a more accessible option without compromising on quality. However, the SIGMA lens offers a versatile zoom range, which may justify its higher price for users seeking flexibility in their photography.

Build Quality and Design

When it comes to build quality, the TTARTISAN 40mm f2 is crafted from premium 5052 aerospace aluminum, weighing just 167g, making it incredibly portable. In contrast, the SIGMA lens is slightly heavier at 300g but is still considered lightweight for its class. The SIGMA lens boasts a compact design with a maximum diameter of 69.2mm and a length of 74.5mm, making it easy to handle. While both lenses are well-constructed, the TTARTISAN's ultra-portable design can be a deciding factor for those who prioritize ease of transport.

Performance in Low Light Conditions

Both lenses are designed to excel in low light situations, but they employ different methods to achieve this. The TTARTISAN 40mm lens features a bright f/2 aperture, which enhances clarity and color reproduction even in challenging lighting conditions. This ability allows photographers to capture stunning images in dim environments. On the other hand, the SIGMA lens, with its f/2.8 aperture, still performs admirably but may not be as effective as the TTARTISAN in very low light. For night photography or indoor settings, the TTARTISAN may have the upper hand.

Focusing Capabilities

Focusing performance is crucial for capturing sharp images, and both lenses offer unique advantages. The TTARTISAN 40mm lens includes advanced autofocus capabilities with an STM motor and face/eye tracking, ensuring smooth focus transitions, especially useful for portrait and video work. Meanwhile, the SIGMA lens allows for close-up shots with a minimum focusing distance of 12.1cm and a maximum magnification of 1:2.8, which is beneficial for macro photography. While the TTARTISAN excels in autofocus technology, the SIGMA lens provides distinct advantages for detailed close-ups.

Versatility and Use Cases

Versatility is a key consideration when selecting a lens. The SIGMA 18-50mm lens offers a zoom feature, allowing photographers to switch between wide-angle and standard perspectives seamlessly. This makes it ideal for various shooting scenarios, from landscapes to portraits. In contrast, the TTARTISAN 40mm lens, being a prime lens, is fixed at one focal length, which can encourage creativity but may require more thought in composition. For those who value adaptability in their photography, the SIGMA lens stands out, while the TTARTISAN may appeal to those who prefer a more focused approach.

Compatibility and Mounting

Compatibility is essential for ensuring that your lens works with your camera system. The SIGMA lens is specifically designed for Canon RF Mount mirrorless cameras, making it an excellent choice for Canon users. Conversely, the TTARTISAN 40mm lens is designed for Nikon Z mount cameras, such as the Z50, Z6, and Z7 series. If you already own a camera with one of these mounts, your choice may be straightforward based on your existing gear.

User Experience and Feedback

While there are no specific sales ranks or bestseller statuses mentioned for either lens, user experience often plays a significant role in overall satisfaction. The SIGMA lens is known for its high performance and quality, particularly among those who appreciate the versatility of zoom lenses. On the other hand, the TTARTISAN lens has garnered attention for its affordability and build quality, making it a popular choice among budget-conscious enthusiasts. While individual preferences will ultimately guide the decision, both lenses have their respective strengths that appeal to different audiences.

Which should you buy?

Choosing between the SIGMA 18-50mm F2.8 DC DN Contemporary Lens and the TTARTISAN 40mm f2 Lens largely depends on your photography needs and budget. The SIGMA lens offers versatility with its zoom capabilities and high-quality performance, making it ideal for those who want a reliable all-rounder. However, if you're looking for a budget-friendly option that excels in low light and portability, the TTARTISAN lens stands out as an excellent choice. Ultimately, your decision should align with your specific style and shooting conditions.