S erounder vs TTARTISAN AF
Updated July 2026 — S erounder wins on diameter and weight, TTARTISAN AF wins on price and aperture.
The 37mm Super Fisheye Lens is a budget-friendly option for creative photography, while the TTARTISAN AF 27mm lens offers advanced features for serious Fujifilm users.
Why S erounder is better
Price
More affordable at $52.35
Weight
Lighter at 228g
Macro Feature
Includes a macro lens with 12.5x magnification
Why TTARTISAN AF is better
Optical Quality
Better low-light performance with f/2.8 aperture
Portability
Ultra-compact pancake design
Advanced Features
Includes eye recognition focus and USB firmware upgrade
Overall score
Specifications
| Spec | S erounder | TTARTISAN AF |
|---|---|---|
| Build Material | Aluminum Alloy | Metal |
| Compatibility | 37mm lenses | Fujifilm X-mount |
| Fisheye Effect | Yes | No |
| Macro Capability | Yes | No |
| Focus Type | Manual | Auto |
Dimension comparison
Overview of the Products
The 37mm 0.25X Super Fisheye Lens Additional Lens is priced at $52.35, while the TTARTISAN AF 27mm f2.8 APS-C Frame Lens costs significantly more at $159.99. With a price difference of about 205%, the two lenses are aimed at different types of photography enthusiasts. The fisheye lens is designed to provide a unique wide-angle perspective, while the pancake lens offers a compact form factor suitable for everyday use with Fujifilm X-mount cameras.
Design and Build Quality
The 37mm Super Fisheye Lens features an aluminum alloy construction, ensuring durability and a long service life. Its lightweight design, weighing approximately 228 grams, makes it easy to carry with a provided storage bag. In contrast, the TTARTISAN AF 27mm lens boasts an ultra-compact pancake design, which enhances portability and is perfect for travel. Both lenses prioritize a sturdy build, but the choice depends on whether you value portability or a more specialized shooting tool.
Optical Performance
The 37mm Super Fisheye Lens provides a fisheye effect with a magnification factor of 0.25X, allowing for creative photography that captures a wide view. This lens is suitable for capturing unique angles and special occasions. On the other hand, the TTARTISAN AF 27mm lens features an f/2.8 aperture, which facilitates low-light performance and depth of field control. Although both lenses serve different purposes, the optical characteristics of the TTARTISAN lens cater to more traditional photography needs.
Features and Usability
The 37mm Fisheye Lens includes a two-part design that allows users to separate it into a macro lens with a 12.5 times magnification effect. This feature is excellent for close-up photography. Meanwhile, the TTARTISAN lens incorporates advanced features like an STM stepping motor for smooth focusing, eye recognition focus for better subject tracking, and a clicked aperture ring for easy adjustments. The TTARTISAN lens is designed for users looking for ease of use and versatility in their photography.
Compatibility
The 37mm Super Fisheye Lens is compatible with all 37mm caliber camera lenses, making it a versatile addition for photographers who already own such equipment. It is primarily designed for creative applications rather than general photography. Conversely, the TTARTISAN AF 27mm lens is specifically tailored for Fujifilm X-mount cameras, such as the XS10, X-E4, and X-T10, providing a focused solution for Fujifilm users. This specialized compatibility can be a deciding factor for those deeply invested in a specific camera system.
Price Comparison
The cost of the 37mm Fisheye Lens at $52.35 makes it a budget-friendly option, especially for those exploring creative photography without breaking the bank. In comparison, the TTARTISAN AF 27mm lens is priced at $159.99, which is about $107.64 more expensive. This significant price difference reflects the varying target markets for these products, with the TTARTISAN lens catering to serious photographers willing to invest in quality and performance.
User Experience
The 37mm Super Fisheye Lens is designed for photographers who enjoy experimenting with angles and perspectives, making it ideal for those who appreciate artistic expression. Its lightweight and compact nature enhances user experience, especially during outdoor photography. The TTARTISAN AF 27mm lens, however, focuses on providing a smooth shooting experience with features like eye recognition focus and USB firmware upgrades, appealing to users who require more functional and advanced capabilities in their lenses.
Which should you buy?
Choosing between the 37mm Super Fisheye Lens and the TTARTISAN AF 27mm lens largely depends on your photography style and needs. If you are looking for a budget-friendly option that allows for creative and experimental photography, the 37mm Fisheye Lens is a great choice. However, if you are a Fujifilm user seeking a compact, versatile lens with advanced features for everyday shooting, then the TTARTISAN AF 27mm lens, despite its higher price, may be the better investment.

