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Canon EF-S 18- vs YONGNUO YN50mm F1.8N Standard Prime Lens, Large

Updated July 2026 — Canon EF-S 18- leads on price and focal length.

The Canon EF-S 18-135mm f/3.5-5.6 is STM offers superior versatility and image quality, while the YONGNUO YN50mm F1.8N is a budget-friendly option for Nikon users.

Why Canon EF-S 18- is better

Versatility

Canon lens offers a zoom range from 18mm to 135mm.

Image Quality

Canon lens has advanced optical design with UD and PMO elements.

Autofocus

Canon lens features fast and silent autofocus with a stepping motor.

Why YONGNUO YN50mm F1.8N Standard Prime Lens, Large is better

Price

YONGNUO lens is significantly cheaper at $102.

Portability

YONGNUO lens is lighter and simpler in design.

Compatibility

YONGNUO lens is compatible with Nikon DSLR cameras.

Overall score

Canon EF-S 18-
85
YONGNUO YN50mm F1.8N Standard Prime Lens, Large
70

Specifications

SpecCanon EF-S 18-YONGNUO YN50mm F1.8N Standard Prime Lens, Large
BrandCanonYONGNUO
Max Aperturef/5.6f/1.8
Lens TypeZoomPrime
Image StabilizationYesNo
Focus ModesAuto/ManualAuto/Manual

Dimension comparison

Canon EF-S 18-YONGNUO YN50mm F1.8N Standard Prime Lens, Large

Overview of the Canon EF-S 18-135mm f/3.5-5.6 is STM

The Canon EF-S 18-135mm f/3.5-5.6 is STM is a versatile zoom lens that offers a range of focal lengths suitable for various photography styles. Priced at $329.95, this lens is designed to provide high-quality images for both video and still photography. It features a refined Image Stabilization system that achieves up to four equivalent stops of shake correction, making it an excellent choice for dynamic shooting scenarios.

This lens incorporates an inner focusing system and a stepping motor for fast, quiet autofocus, particularly beneficial for movie shooting. The design includes a UD and PMO aspheric lens to minimize chromatic aberration while ensuring high resolution and contrast in images. Its 7-blade circular aperture is optimized for creating beautiful background bokeh, enhancing portrait photography.

Overview of the YONGNUO YN50mm F1.8N Standard Prime Lens

The YONGNUO YN50mm F1.8N is a budget-friendly prime lens characterized by its large aperture and versatile use, priced at $102.00. This lens is ideal for those using Nikon DSLR cameras, supporting both auto and manual focus modes, making it a great addition to any photographer's kit.

Featuring a 50mm focal length, the YN50mm is particularly effective for portraiture and low-light conditions due to its f/1.8 aperture. Its construction includes gold-plated metal contacts that enhance signal conductivity and improve corrosion resistance. This lens is compatible with full-frame and APS-C format cameras, which broadens its usability across different Nikon bodies.

Image Quality Comparison

When it comes to image quality, the Canon EF-S 18-135mm f/3.5-5.6 is STM excels with its sophisticated optical design, incorporating one UD and one PMO aspheric lens. This design significantly reduces chromatic aberration and enhances overall image clarity, making it suitable for a wide range of photographic applications. The lens also delivers high-resolution images with excellent contrast.

On the other hand, the YONGNUO YN50mm F1.8N, while providing good quality images, may not match the Canon's versatility. The large f/1.8 aperture allows for stunning depth of field effects and exceptional low-light performance, but it lacks the zoom capability of the Canon lens. Thus, while the YN50mm can produce beautiful portraits, the Canon lens offers more flexibility for different shooting environments.

Autofocus Performance

The Canon EF-S 18-135mm f/3.5-5.6 is STM features an inner focusing system combined with a stepping motor, resulting in fast and silent autofocus performance. This capability is particularly advantageous for videographers who require smooth and discreet focus transitions during filming. The optimized autofocus algorithm further enhances its responsiveness, making it suitable for capturing fast-moving subjects.

In contrast, the YONGNUO YN50mm F1.8N also supports both auto focus and manual focus modes, providing flexibility for various shooting scenarios. However, it may not achieve the same level of speed and quietness as the Canon lens during autofocus, especially in challenging lighting conditions. For users prioritizing autofocus performance, the Canon lens holds an advantage.

Build Quality and Design

The Canon EF-S 18-135mm f/3.5-5.6 is STM is not only compact but also designed for durability, weighing 16.9 oz. and featuring a zoom ring lock to prevent accidental extension. Its design reflects a professional-grade build, making it suitable for everyday use and more demanding shooting conditions.

Conversely, the YONGNUO YN50mm F1.8N is lighter and simpler in design, making it highly portable. However, it may not exhibit the same robust construction as the Canon lens. The gold-plated metal contacts improve connectivity, but overall, the Canon lens is likely to withstand more rigorous use over time.

Price and Value for Money

The Canon EF-S 18-135mm f/3.5-5.6 is STM is priced at $329.95, which positions it as a higher-end option but reflects its advanced features and versatility. In comparison, the YONGNUO YN50mm F1.8N is significantly less expensive at $102.00, making it about 69% cheaper. This lower price point makes the YN50mm an appealing choice for budget-conscious photographers seeking a quality prime lens.

While the Canon lens offers more functionality and superior optical performance, the value proposition of the YONGNUO lens cannot be overlooked, especially for beginners or those who primarily shoot portraits and low-light scenes.

Compatibility and Use Cases

The Canon EF-S 18-135mm f/3.5-5.6 is STM is designed specifically for Canon's APS-C DSLRs, making it an ideal companion for versatile shooting situations, from landscapes to portraits and video. Its range of focal lengths allows users to shoot wide-angle scenes and zoom in on distant subjects without changing lenses.

On the other hand, the YONGNUO YN50mm F1.8N is compatible with Nikon DSLR cameras, which limits its use to users of that brand. It excels in portrait photography and low-light situations but lacks the versatility of a zoom lens. Photographers looking for a single high-quality lens for their Nikon camera may find the YN50mm to be a strong candidate.

Which should you buy?

Choosing between the Canon EF-S 18-135mm f/3.5-5.6 is STM and the YONGNUO YN50mm F1.8N ultimately depends on your specific needs and budget. If you require a versatile lens capable of handling various shooting scenarios with superior image quality and autofocus performance, the Canon lens is the better choice, despite its higher price of $329.95.

However, if you're a Nikon user or looking for a budget-friendly option focused on portrait photography and low-light performance, the YONGNUO lens, priced at just $102.00, offers excellent value for money. Each lens serves a unique purpose, making your decision contingent on your photography style and equipment compatibility.