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S erounder vs YNLENS YONGNUO YN50mm

Updated July 2026 — S erounder wins on weight, YNLENS YONGNUO YN50mm wins on price and compatibility.

The YONGNUO YN50mm lens offers superior optical performance and versatility, making it a better choice for serious photographers.

Why S erounder is better

Price

The 37mm fisheye lens is significantly cheaper.

Weight

The fisheye lens is slightly heavier.

Macro Feature

The fisheye lens has a macro close-up capability.

Why YNLENS YONGNUO YN50mm is better

Optical Quality

The YONGNUO lens has a larger aperture for low-light performance.

Build Quality

The YONGNUO lens features a high-precision metal bayonet.

Versatility

The YONGNUO lens is compatible with a wider range of cameras.

Overall score

S erounder
65
YNLENS YONGNUO YN50mm
85

Specifications

SpecS erounder YNLENS YONGNUO YN50mm
MaterialAluminum AlloyHigh-Precision Metal
Focus TypeManualAF/MF
Use CaseCreative ShotsPortraits
StorageBag IncludedNone
BokehLimitedCreamy

Dimension comparison

S erounder YNLENS YONGNUO YN50mm

Overview

The 37mm 0.25X Super Fisheye Lens Additional Lens and the YONGNUO YN50mm 50mm f/1.8 Lens for Nikon F-Mount cater to different photography needs and styles. The fisheye lens, priced at $52.35, is designed for wide-angle shots and special effects, while the YONGNUO lens, at $102.00, focuses on providing a standard prime experience with a large aperture for portraiture and low-light situations. Understanding their distinct features can help you choose the right lens for your photography.

Price Comparison

When considering budget, the 37mm 0.25X Super Fisheye Lens is significantly cheaper than the YONGNUO lens, costing about 49% less. At $52.35, it offers an economical option for photographers looking to experiment with fisheye effects. In contrast, the YONGNUO YN50mm lens is priced at $102.00, which may reflect its advanced optics and versatility. This price difference could be a deciding factor for beginners or hobbyists who want to explore creative photography without a hefty investment.

Design and Build Quality

Both lenses exhibit sturdy construction but cater to different preferences in design. The 37mm 0.25X Super Fisheye Lens is made from high-quality aluminum alloy and optical glass, ensuring durability while remaining lightweight at approximately 228g. It includes a storage bag for easy transportation. On the other hand, the YONGNUO YN50mm lens also boasts a compact design, weighing around 203g, and features a high-precision metal bayonet and gold-plated contacts, adding to its professional feel. While both lenses are portable, the YONGNUO offers a slightly more refined touch in build quality.

Optical Performance

Optically, the YONGNUO YN50mm lens stands out with its large f/1.8 aperture, enabling stunning low-light performance and creating a creamy bokeh effect ideal for portrait photography. It features an optical structure of 6 elements in 5 groups, which helps minimize glare and ghosting, providing crisp and clear images. In contrast, the 37mm 0.25X Super Fisheye Lens offers a 0.25X magnification with a unique fisheye effect, which is excellent for creative wide-angle shots but may not match the optical clarity of the YONGNUO lens. Thus, for traditional photography needs, the YONGNUO lens might deliver superior performance.

Use Cases

The intended use for each lens varies significantly. The 37mm 0.25X Super Fisheye Lens is tailored for special photography scenarios, such as creative landscapes or artistic shots requiring distortion and wide perspectives. It is particularly beneficial for photographers looking to explore unconventional angles. Conversely, the YONGNUO YN50mm lens, with its focus on portraiture and street photography, is ideal for capturing realistic human perspectives and achieving professional results. This difference highlights that your choice should depend on your photography style and specific needs.

Compatibility

Compatibility is another important factor when choosing between the two lenses. The 37mm 0.25X Super Fisheye Lens is designed specifically for cameras with a 37mm lens mount, making it versatile for various models with this specification. In comparison, the YONGNUO YN50mm lens is compatible with a wide range of Nikon F-Mount cameras, including popular models like the D3000 and D5000 series. If you own a Nikon camera, the YONGNUO lens may provide a more seamless integration into your gear.

Photography Experience

Using each lens affords a different photographic experience. The 37mm 0.25X Super Fisheye Lens is easy to carry due to its lightweight design and includes a storage bag, making it user-friendly for on-the-go shooting. It allows for macro close-up photography when separated into two parts, enhancing its versatility. In contrast, the YONGNUO YN50mm lens offers features like face and eye recognition, which can streamline the photography process, especially in portrait settings. This added functionality can be particularly appealing for those who prioritize convenience and advanced features in their photography.

Which should you buy?

Ultimately, choosing between the 37mm 0.25X Super Fisheye Lens and the YONGNUO YN50mm 50mm f/1.8 lens boils down to your specific photography needs. If you're looking for a budget-friendly option that allows for creative wide-angle shots, the fisheye lens is a great choice at $52.35. However, if you desire a versatile standard prime lens that excels in low-light conditions and portrait photography, the YONGNUO lens, despite its higher price of $102.00, may be worth the investment. Each lens serves a unique purpose, so consider your style and the type of photography you wish to pursue before making a decision.