S erounder vs VILTROX
Updated July 2026 — S erounder wins on price and optical effect, VILTROX wins on versatility and weight.
The 37mm 0.25X Super Fisheye Lens is great for creative photography at a low price, while the VILTROX 9mm F2.8 E offers superior versatility and autofocus for serious photographers.
Why S erounder is better
Price
Significantly cheaper option
Weight
Lightweight design for portability
Special Effect
Unique fisheye effect for creative shots
Why VILTROX is better
Autofocus
Built-in STM motor for precise focusing
Low-Light Performance
Bright F2.8 aperture for better low-light shots
Compatibility
Designed specifically for Sony E-mount cameras
Overall score
Specifications
| Spec | S erounder | VILTROX |
|---|---|---|
| Aperture | N/A | F2.8 |
| Magnification | 0.25X | N/A |
| Compatibility | 37mm mount | Sony E-mount |
| Material | Aluminum Alloy | N/A |
| Focusing | Manual | Autofocus |
Dimension comparison
Overview of the Products
In this comparison, we will explore two distinct camera lenses: the 37mm 0.25X Super Fisheye Lens Additional Lens and the VILTROX 9mm F2.8 E. The first lens, priced at $52.35, offers a unique fisheye effect suited for creative photography. In contrast, the VILTROX lens, available for $199.00, is designed for a broader range of shooting scenarios, especially in low-light conditions. Both lenses possess unique features that cater to different photography needs.
Design and Build Quality
The 37mm 0.25X Super Fisheye Lens showcases a solid construction, utilizing high-quality aluminum alloy and optical glass. This robust design ensures durability while maintaining a lightweight profile, making it easy to carry and store. On the other hand, the VILTROX 9mm F2.8 E lens is also compact and lightweight, which is essential for on-the-go photographers. Its design is tailored for Sony E-mount cameras, emphasizing mobility without sacrificing image quality. While both lenses are designed with portability in mind, the aluminum alloy construction of the fisheye lens may appeal to users looking for sturdiness.
Optical Performance
When it comes to optical performance, the 37mm 0.25X Super Fisheye Lens provides a remarkable fisheye effect, allowing for a broader picture range with a magnification of 0.25X. This makes it ideal for specific artistic shots and special photography occasions. In contrast, the VILTROX 9mm F2.8 E lens boasts a bright F2.8 aperture, enabling stunning low-light captures and beautiful background separation. This capability makes the VILTROX lens suitable for a wider array of shooting environments, including events and landscapes. Thus, while the fisheye lens excels in creative effects, the VILTROX lens delivers superior versatility.
Compatibility
The 37mm 0.25X Super Fisheye Lens is compatible with any camera that has a 37mm lens mount. This strong applicability makes it a versatile choice for photographers who may own multiple camera systems. Conversely, the VILTROX 9mm F2.8 E lens is specifically designed for Sony E-mount cameras, including popular models like the a6400, a6500, and a6600. This focused compatibility means that while the VILTROX lens may limit its user base to Sony camera owners, it ensures optimized performance for those devices. Therefore, your choice of lens may depend heavily on your camera system.
Autofocus and Focusing Mechanism
The VILTROX 9mm F2.8 E lens features a built-in STM stepping motor for efficient and reliable autofocus. This technology supports eye and face detection, improving the speed and accuracy of focus, making it ideal for fast-paced shooting situations. In contrast, the 37mm 0.25X Super Fisheye Lens does not mention any autofocus capabilities, suggesting that it may require manual focusing. This aspect can make the VILTROX lens more appealing for photographers looking for quick adjustments in dynamic settings. Thus, the autofocus feature is a significant advantage for the VILTROX lens, especially for those who prioritize speed in their photography.
Price Comparison
The price difference between the two lenses is substantial. The 37mm 0.25X Super Fisheye Lens is priced at $52.35, making it about 73% cheaper than the VILTROX 9mm F2.8 E, which costs $199.00. This significant price gap makes the fisheye lens an attractive option for hobbyists or those looking to experiment with creative photography without a hefty investment. Conversely, the higher price of the VILTROX lens may be justified by its advanced features and greater versatility, appealing to professional photographers who require a reliable wide-angle lens.
Target Audience
The 37mm 0.25X Super Fisheye Lens is ideal for creative photographers who enjoy experimenting with unique perspectives and artistic effects. Its lightweight design and affordability make it especially appealing to beginners or those who wish to add a specialized lens to their collection. In contrast, the VILTROX 9mm F2.8 E lens caters to serious photographers and videographers who need a reliable, versatile lens with excellent low-light performance and autofocus capabilities. The target audience for each lens is therefore quite distinct, with the fisheye lens appealing to the artistic niche and the VILTROX lens targeting more professional users.
Which should you buy?
Choosing between the 37mm 0.25X Super Fisheye Lens and the VILTROX 9mm F2.8 E ultimately depends on your specific needs and photography style. If you're looking for an affordable lens that offers unique creative opportunities, the 37mm fisheye lens is an excellent choice. However, if you require a versatile lens that excels in various conditions and offers advanced autofocus technology, the VILTROX lens may be worth the investment. In summary, assess your photography goals and camera compatibility to make the best decision for your needs.

