S erounder vs YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus
Updated July 2026 — S erounder wins on weight and magnification, YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus wins on price and compatibility.
The 37mm 0.25X Super Fisheye Lens is a budget-friendly option for creative photography, while the YONGNUO YN50mm F1.8 Lens offers versatility and quality for everyday use.
Why S erounder is better
Price
$52.35 is cheaper than $82.00
Weight
Lightweight at 228g
Macro Feature
Includes macro lens with 12.5x magnification
Why YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus is better
Aperture
F1.8 provides better low-light performance
Auto Focus
Supports both auto and manual focus
Build Quality
Gold plating enhances conductivity and durability
Overall score
Specifications
| Spec | S erounder | YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus |
|---|---|---|
| Material | Aluminum Alloy + Optical Glass | Not specified |
| Effect | Fisheye | Standard |
| Storage Bag | Yes | No |
| Focus Modes | Manual | Auto/Manual |
| Camera Compatibility | 37mm | Canon EF |
Dimension comparison
Overview of the Products
In the world of camera lenses, the 37mm 0.25X Super Fisheye Lens and the YONGNUO YN50mm F1.8 Lens each offer unique features tailored to different photography needs. The fisheye lens is priced at $52.35, while the YONGNUO lens comes in at $82.00, making the fisheye lens about 36% cheaper. This price difference indicates a distinct approach to lens design and application, catering to various styles of photography.
Design and Build Quality
The 37mm 0.25X Super Fisheye Lens boasts a sturdy design made from aluminum alloy and optical glass, ensuring durability while remaining lightweight at approximately 228 grams. The YONGNUO YN50mm F1.8 Lens, while not explicitly detailed regarding materials, is compatible with Canon EF mount cameras and features gold plating on its metal contacts, enhancing signal conductivity and corrosion resistance. Both lenses are designed for ease of use, but the fisheye lens includes a storage bag, making it convenient for transport and storage.
Optical Performance
When it comes to optical performance, the 37mm 0.25X Super Fisheye Lens offers a unique fisheye effect with a 0.25X magnification, ideal for capturing wide-angle shots and special photography occasions. In contrast, the YONGNUO YN50mm F1.8 Lens features a large aperture of F1.8, which provides excellent low-light performance and a beautiful bokeh effect. The YONGNUO lens supports both auto and manual focus, catering to versatile shooting preferences, while the fisheye lens is designed primarily for wide-angle and macro close-up shooting.
Versatility in Usage
The 37mm 0.25X Super Fisheye Lens is particularly suited for those looking to explore creative angles and unique perspectives, especially in landscape or artistic photography. Its dual-part design allows for a macro lens that provides a 12.5 times magnification effect, making it versatile for close-up shooting as well. On the other hand, the YONGNUO YN50mm F1.8 Lens is designed for everyday photography, from portraits to street photography. Its compatibility with both full-frame and APS-C format cameras adds to its versatility, appealing to a broader range of photographers.
Price Comparison
The 37mm 0.25X Super Fisheye Lens is priced at $52.35, which is significantly lower than the YONGNUO YN50mm F1.8 Lens, priced at $82.00. This price difference of $29.65 makes the fisheye lens a more budget-friendly option for photographers who want to experiment with unique effects without a substantial investment. For those who prioritize a standard lens with a larger aperture for everyday use, the higher price of the YONGNUO lens may be justified.
Target Audience
The target audience for the 37mm 0.25X Super Fisheye Lens primarily includes creative photographers and enthusiasts looking to achieve wide-angle shots and unique effects. Its design and features make it particularly appealing for those interested in artistic photography. Conversely, the YONGNUO YN50mm F1.8 Lens targets a broader audience, including both amateur and professional photographers who require a reliable lens for various shooting scenarios. Its auto-focus capability and large aperture cater well to users who prioritize ease of use and high-quality images.
User Experience
User experience can vary significantly between the two lenses. The 37mm 0.25X Super Fisheye Lens is designed for ease of transport and includes a storage bag, making it convenient for outdoor shoots. Its lightweight nature further enhances its portability. The YONGNUO YN50mm F1.8 Lens, while also user-friendly, focuses more on functionality with its focus distance indicator and multi-coated lenses, contributing to improved transmittance. Both lenses cater to different user experiences, with the fisheye lens promoting creative exploration and the YONGNUO lens emphasizing versatility and reliability.
Which should you buy?
Choosing between the 37mm 0.25X Super Fisheye Lens and the YONGNUO YN50mm F1.8 Lens ultimately depends on your photography needs and style. If you're looking for a budget-friendly option that provides creative wide-angle capabilities, the 37mm fisheye lens at $52.35 is a compelling choice. However, if you require a versatile lens with a large aperture for general photography and don't mind spending $82.00, the YONGNUO lens would serve you well. Each lens has its strengths, making the decision rooted in your specific photographic goals.

