S erounder vs VILTROX
Updated July 2026 — S erounder wins on weight and focal length, VILTROX wins on build and aperture.
The VILTROX 25mm F1.7 E offers superior optical quality and versatility compared to the 37mm fisheye lens. It is the better choice for serious photographers.
Why S erounder is better
Lower Price
The 37mm lens is priced at $52.35.
Lightweight
The fisheye lens is easy to carry.
Macro Capability
Offers 12.5 times magnification for close-ups.
Why VILTROX is better
Optical Quality
Features a bright f/1.7 aperture for low-light performance.
Autofocus
Includes fast and precise autofocus.
Versatility
Suitable for various photography styles.
Overall score
Specifications
| Spec | S erounder | VILTROX |
|---|---|---|
| Material | Aluminum Alloy | Optical Glass |
| Close Focus | Not Specified | 0.33m |
| Image Quality | Good | Excellent |
| Storage Bag | Included | Not Included |
| Lens Hood | Not Included | Included |
Dimension comparison
Design and Build Quality
The 37mm 0.25X Super Fisheye Lens boasts a sturdy construction with high-quality aluminum alloy and optical glass materials, while the VILTROX 25mm F1.7 E features a thoughtful design with a user-friendly interface. The aluminum alloy of the fisheye lens ensures durability, making it a reliable choice for outdoor photography. In contrast, the VILTROX lens is designed with 12 elements in 10 groups, which includes specialized elements to enhance optical performance. This attention to detail in the VILTROX lens design suggests a focus on delivering high image quality, especially useful for those aiming to capture sharp and vivid images.
Optical Performance
The VILTROX 25mm F1.7 E excels in optical performance with its bright f/1.7 aperture, delivering exceptional low-light capabilities and beautiful background blur. This is particularly beneficial for portrait and street photography. Meanwhile, the 37mm 0.25X Super Fisheye Lens provides a unique fisheye effect that offers a wider picture range, ideal for creative and artistic shots. The macro capability of the fisheye lens, allowing for 12.5 times magnification, adds versatility, but it may not match the clarity and sharpness offered by the VILTROX lens, especially in challenging lighting conditions.
Focal Length and Versatility
The VILTROX 25mm F1.7 E has a focal length equivalent to 38mm, making it a versatile option for various photography styles, from landscapes to portraits. Its close focusing distance of just 0.33 meters allows for stunning close-up shots. On the other hand, the 37mm fisheye lens specializes in wide-angle photography with its 0.25X magnification, which may limit its versatility for more traditional photography needs. Therefore, while the fisheye lens is perfect for niche applications, the VILTROX offers broader capabilities for everyday use.
Price Comparison
The 37mm 0.25X Super Fisheye Lens is priced at $52.35, making it about 70% cheaper than the VILTROX 25mm F1.7 E, which costs $176.00. This significant price difference may attract budget-conscious photographers looking for a unique lens without breaking the bank. However, the higher price of the VILTROX lens can be justified by its advanced features and superior optical quality, which may be more appealing to professional photographers or those who prioritize image quality over cost.
Intended Use Cases
The 37mm 0.25X Super Fisheye Lens is particularly suited for creative photographers seeking to capture unique perspectives and special shooting occasions. Its ability to create a dramatic fisheye effect makes it ideal for artistic projects and fun photography. Conversely, the VILTROX 25mm F1.7 E is designed for a broader range of applications, including portrait, street, and everyday photography, thanks to its fast autofocus and low focus breathing. This makes it an excellent choice for videographers as well, who require smooth focus transitions.
Autofocus and Usability
The VILTROX 25mm F1.7 E includes a new STM motor for fast and precise autofocus, which is an important feature for both photography and videography. This near-silent operation enhances the user experience by minimizing noise during shooting. On the other hand, the 37mm fisheye lens does not mention autofocus capabilities, indicating it may rely on manual focus, which could be less convenient for some users. Therefore, for those who prioritize quick and reliable autofocus, the VILTROX lens is the clear winner in this category.
Special Features
The VILTROX lens includes thoughtful design features such as an extended lens hood, which protects against stray light and enhances image contrast. Additionally, it has a USB-C upgrade port for firmware updates, ensuring compatibility with new camera models. In contrast, the 37mm fisheye lens comes with a storage bag and a dust removal cloth, emphasizing portability and ease of transport. While both lenses offer unique features, the VILTROX clearly stands out with its advanced technology and user-friendly enhancements.
Which should you buy?
Choosing between the 37mm 0.25X Super Fisheye Lens and the VILTROX 25mm F1.7 E ultimately depends on your specific photography needs. If you’re a creative looking for an affordable lens that delivers a unique fisheye effect, the 37mm lens might be the right fit at just $52.35. However, if you need a versatile, high-performance lens suitable for various shooting scenarios, the VILTROX 25mm F1.7 E, priced at $176.00, offers superior optical quality and advanced features that justify the investment.

