S erounder vs VILTROX AF
Updated July 2026 — S erounder wins on weight and compatibility, VILTROX AF wins on price and build.
The VILTROX AF 28mm lens offers superior image quality and advanced features, making it the better choice for serious photographers. However, the 37mm fisheye lens is a more affordable option for creative photography.
Why S erounder is better
Price
The 37mm lens is significantly cheaper.
Macro Feature
Includes a macro lens for close-up shots.
Weight
Heavier but sturdy build.
Why VILTROX AF is better
Image Quality
Superior optical performance with advanced lens elements.
Autofocus
Features efficient autofocus with face and eye recognition.
Design
Ultra-light and slim design enhances portability.
Overall score
Specifications
| Spec | S erounder | VILTROX AF |
|---|---|---|
| Focal Length | 37mm | 28mm |
| Material | Aluminum + Glass | Aluminum Alloy |
| Lens Type | Fisheye | Wide-Angle |
| Elements | Not Specified | 6 elements |
| Macro Capability | Yes | No |
Dimension comparison
Overview of the Products
The 37mm 0.25X Super Fisheye Lens Additional Lens is priced at $52.35, while the VILTROX AF 28mm F4.5 XF Pancake Lens is available for $99.00. This makes the fisheye lens about 47% cheaper than the VILTROX lens. Both products cater to different photography needs, with the fisheye lens offering a specialized effect and the VILTROX lens focusing on versatility for Fuji X-mount cameras.
Design and Build Quality
The 37mm 0.25X Super Fisheye Lens is constructed from aluminum alloy and optical glass, providing a sturdy build that ensures longevity. Its lightweight design, weighing approximately 228 grams, is ideal for photographers on the go. In contrast, the VILTROX AF 28mm lens is remarkably slim and lightweight at just 60 grams, measuring only 15.3mm thick. This ultra-light design makes it the thinnest lens in the Viltrox lineup, enhancing its portability for travel or vlogging. Both lenses are designed for ease of use, but the VILTROX offers a more compact form, making it easier to carry.
Image Quality and Performance
In terms of image quality, the 37mm 0.25X Super Fisheye Lens is designed to create a wide-angle fisheye effect, making it suitable for capturing expansive landscapes or unique perspectives. However, it does not provide specific details on optical performance. On the other hand, the VILTROX AF 28mm lens features six elements in six groups, including two ED and two aspherical lenses, which contribute to sharp images and vibrant colors. The addition of HD Nano Coating minimizes reflections and enhances clarity, making the VILTROX a superior option for those who prioritize image quality.
Special Features and Usability
The 37mm 0.25X Super Fisheye Lens includes a macro lens that can be used independently, offering a 12.5 times magnification effect for close-up shooting. This feature enhances its versatility for photographers interested in both fisheye and macro photography. Alternatively, the VILTROX lens boasts an innovative slide cap design that transforms into a lens cap, protecting it from dust while adding a fun element to shooting. The VILTROX also supports advanced autofocus features, including face and eye recognition, positioning it as a more user-friendly option for dynamic shooting scenarios.
Compatibility and Application
The 37mm 0.25X Super Fisheye Lens is compatible with any 37mm caliber camera lens, making it versatile for various camera setups. Its design focuses on capturing unique angles, particularly beneficial for specialized photography. Conversely, the VILTROX AF 28mm lens is specifically designed for Fuji X-mount cameras, including popular models like the X-T5 and X-H2. This dedicated compatibility makes the VILTROX a better choice for Fuji users looking for a reliable, all-purpose lens.
Price Comparison
At $52.35, the 37mm 0.25X Super Fisheye Lens presents a more budget-friendly option compared to the VILTROX AF 28mm lens, which costs $99.00. This price difference of $46.65 signifies that the fisheye lens is about 47% less expensive. For those on a tighter budget or seeking niche photography tools without a hefty investment, the 37mm lens is a compelling option. However, the VILTROX lens may justify its higher price with enhanced features and superior image quality.
User Experience and Feedback
While there are no specific sales or bestseller rankings available for either lens, the unique offerings of each suggest they cater to different user experiences. The 37mm 0.25X Super Fisheye Lens is likely favored by those who enjoy creative photography and unique perspectives, while the VILTROX AF 28mm lens is tailored for users seeking reliable performance and ease of use in everyday photography. User feedback may vary based on the intended use, with the VILTROX appealing to a broader audience due to its autofocus capabilities.
Which should you buy?
Ultimately, the choice between the 37mm 0.25X Super Fisheye Lens and the VILTROX AF 28mm F4.5 XF Pancake Lens hinges on individual photographic needs. If you're looking for a fun, budget-friendly option that allows for creative fisheye and macro photography, the 37mm lens is an excellent choice at $52.35. However, if you require a high-quality, versatile lens specifically for Fuji X-mount cameras, the VILTROX at $99.00 may be worth the investment for its superior image quality and user-friendly features.

