SIRUI vs TTARTISAN AF
Updated July 2026 — SIRUI wins on price and weight, TTARTISAN AF wins on portability and focal length.
The SIRUI 20mm T1.8 excels in cinematic quality and features, while the TTARTISAN AF 27mm f2.8 offers great portability and value.
Why SIRUI is better
Superior Aperture
SIRUI has a T1.8 aperture for low-light performance.
Cinematic Features
SIRUI offers a 1.33x squeeze factor for widescreen.
Build Quality
SIRUI is designed for professional use with advanced autofocus.
Why TTARTISAN AF is better
Price
TTARTISAN is significantly cheaper at $159.99.
Portability
TTARTISAN is an ultra-compact pancake lens.
Ease of Use
TTARTISAN features a clicked aperture ring for quick adjustments.
Overall score
Specifications
| Spec | SIRUI | TTARTISAN AF |
|---|---|---|
| Autofocus | Yes | Yes |
| Image Circle | Super 35 | APS-C |
| Field of View | Wide | Standard |
| Motor Type | STM | STM |
| Compatibility | E-Mount | Fuji X |
Dimension comparison
Overview of the SIRUI 20mm T1.8 and TTARTISAN AF 27mm f2.8
The SIRUI 20mm T1.8 and TTARTISAN AF 27mm f2.8 are two distinctive camera lenses catering to different photography styles and requirements. The SIRUI lens is priced at $599.00, while the TTARTISAN lens is significantly cheaper at $159.99, making it about 73% less expensive. This price difference reflects their varying target audiences and feature sets.
Design and Build Quality
The SIRUI 20mm T1.8 is a robust and compact lens weighing only 480g (1.06 lbs), designed for advanced cinematic use. Its sleek design includes features like an autofocus system with eye-tracking capabilities, making it suitable for both independent creators and professional productions. In contrast, the TTARTISAN AF 27mm f2.8 is an ultra-compact pancake lens, emphasizing portability. Its lightweight design makes it ideal for travel and casual photography, offering convenience without sacrificing functionality.
Optical Performance
The SIRUI 20mm T1.8 boasts an impressive 1.33x squeeze factor, delivering a cinematic 2.35:1 widescreen ratio. This lens is optimized for Super 35 sensors, ensuring remarkable image clarity. Its ultra-fast T1.8 aperture allows for excellent low-light performance and stunning bokeh effects. On the other hand, the TTARTISAN AF 27mm f2.8 features a standard aperture, which, while functional, does not provide the same level of light-gathering capability as the SIRUI. The SIRUI lens is specifically designed for those who seek high-quality cinematic results, whereas the TTARTISAN is better suited for everyday photography.
Autofocus and Usability
The SIRUI 20mm T1.8 features a precision STM stepping motor that offers smooth and quiet autofocus, complete with an AF/MF switch and autofocus lock capabilities. This makes it an excellent choice for videographers who require rapid focus adjustments. In contrast, the TTARTISAN AF 27mm f2.8 also utilizes a stepping motor, but it emphasizes its eye recognition focus feature, which is beneficial for capturing moments quickly. The TTARTISAN lens has a clicked aperture ring for quicker adjustments, highlighting its user-friendly design for casual shooters.
Compatibility and Versatility
The SIRUI 20mm T1.8 is designed for E-mount cameras, including popular models like the A6500, A6700, and FX3/30, providing excellent versatility for a range of shooting environments. Its wide field of view makes it suitable for expansive landscapes and tight indoor spaces. Conversely, the TTARTISAN AF 27mm f2.8 is tailored for Fuji X mount cameras, compatible with models such as the XS10 and X-T4. While both lenses cater to specific camera systems, the SIRUI's broader application for cinematic setups may appeal more to filmmakers.
Price and Value
The SIRUI 20mm T1.8 is priced at $599.00, positioning it as a premium option for serious filmmakers and video creators. In contrast, the TTARTISAN AF 27mm f2.8 offers a lower price point of $159.99, making it an attractive choice for hobbyists and casual photographers. The significant price difference of about $439.01 reflects their differing capabilities and target markets. For those on a tighter budget, the TTARTISAN lens provides solid performance without breaking the bank.
Target Audience
The SIRUI 20mm T1.8 is aimed at professional videographers and filmmakers looking for high-quality cinematic lenses with advanced features. Its autofocus capabilities, wide aperture, and compatibility with Super 35 sensors make it ideal for cinematic projects. Conversely, the TTARTISAN AF 27mm f2.8 targets casual photographers and travelers who appreciate portability and ease of use. Its compact design and user-friendly features make it a great choice for everyday photography without the need for specialized knowledge.
Which should you buy?
In conclusion, the choice between the SIRUI 20mm T1.8 and TTARTISAN AF 27mm f2.8 ultimately depends on your specific needs and budget. If you are a filmmaker seeking a high-quality, versatile lens for cinematic projects, the SIRUI is the clear winner with its advanced features and superior optical performance. However, if you are looking for an affordable, portable lens for casual photography, the TTARTISAN is an excellent option that delivers solid results without a hefty price tag.

