Canon EF-S 18- vs YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus

Overview of Canon EF-S 18-135mm f/3.5-5.6 IS STM and YONGNUO YN50mm F1.8

The Canon EF-S 18-135mm f/3.5-5.6 IS STM is a versatile lens, while the YONGNUO YN50mm F1.8 is a budget-friendly prime lens. The price difference between these two lenses is substantial: the Canon lens is priced at $329.95, while the YONGNUO lens costs only $82.00, making it about 75% cheaper than its competitor. Each lens serves different photographic needs, making the choice dependent on the specific requirements of the user.

Image Quality and Aperture

When it comes to image quality, the Canon EF-S 18-135mm features a refined image stabilization system and a maximum magnification of 0.28x at the telephoto end, ensuring high-resolution and high-contrast images. It utilizes one UD and one PMO aspheric lens to minimize chromatic aberration. In contrast, the YONGNUO YN50mm boasts a large aperture of F1.8, which allows for greater light intake and the creation of beautifully blurred backgrounds. The difference in aperture size suggests that the YONGNUO may be better for low-light situations, while the Canon provides versatility across a wider focal length range.

Focal Length and Versatility

The Canon EF-S 18-135mm offers a focal length range of 18-135mm, making it suitable for various types of photography, from wide-angle shots to moderate telephoto images. This versatility is ideal for users who want to cover multiple shooting scenarios with a single lens. On the other hand, the YONGNUO YN50mm has a fixed focal length of 50mm, which can limit its use in certain situations but allows for more precise composition in portraits and close-up shots. The versatility of the Canon lens makes it a more comprehensive choice for those who prefer an all-in-one solution.

Autofocus Performance

The autofocus capabilities of the Canon EF-S 18-135mm are enhanced by its inner focusing system, high-speed CPU, and optimized AF algorithm, providing fast and accurate focusing. It also supports Canon's Movie Servo AF feature, making it ideal for video shooting. The YONGNUO YN50mm supports both auto and manual focus modes, which can be beneficial for photographers who prefer hands-on control. However, its autofocus performance may not match the speed and reliability of the Canon lens, especially in dynamic shooting environments.

Build Quality and Design

The Canon EF-S 18-135mm is designed with a zoom ring lock feature that prevents accidental extension of the lens, enhancing its usability during transport. It weighs 16.9 ounces, providing a solid yet manageable heft. The YONGNUO YN50mm is lighter at only 0.78 pounds, which may appeal to those looking for a more portable option. However, the build quality of the Canon, backed by its reputation, may offer more durability and reliability over time compared to the budget-friendly YONGNUO lens.

Price and Value

With a price tag of $329.95, the Canon EF-S 18-135mm is significantly higher than the YONGNUO YN50mm, which retails for $82.00. This represents a price difference of approximately $247.95, indicating that the YONGNUO is a more accessible option for hobbyists or those on a tighter budget. While the Canon lens provides advanced features and versatility, the YONGNUO offers excellent value for its price, catering to those who want decent performance without a hefty investment.

Intended Use Cases

The Canon EF-S 18-135mm is ideal for photographers looking for flexibility across different shooting scenarios, such as landscapes, portraits, and videos. Its image stabilization and zoom range make it suitable for both casual and serious photographers alike. Conversely, the YONGNUO YN50mm is better suited for portrait photographers who appreciate the aesthetic of a large aperture and those who primarily shoot in controlled environments. Each lens is tailored to specific needs, making the intended use a key factor in the decision-making process.

Which should you buy?

Choosing between the Canon EF-S 18-135mm f/3.5-5.6 IS STM and the YONGNUO YN50mm F1.8 ultimately depends on your photography style and budget. If you're seeking versatility and advanced features for various shooting conditions, the Canon lens is worth the investment. However, if you're looking for a cost-effective solution that excels in portrait photography and low-light conditions, the YONGNUO lens is a compelling choice.