lightdow EF/EF-S 420- vs YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus
Updated July 2026 — lightdow EF/EF-S 420- wins on weight and focal length, YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus wins on price and focus type.
The EF/EF-S 420-800mm lens offers excellent value for distant photography, while the YONGNUO YN50mm lens provides versatility with autofocus capabilities.
Why lightdow EF/EF-S 420- is better
Price
EF/EF-S 420-800mm is cheaper at $65.69
Zoom Capability
Longer focal length for distant subjects
Manual Focus
Encourages skill development in photography
Why YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus is better
Aperture
Larger F1.8 aperture for low-light performance
Focus Modes
Supports both auto and manual focus
Versatility
Better for everyday photography and portraits
Overall score
Specifications
| Spec | lightdow EF/EF-S 420- | YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus |
|---|---|---|
| Manual Focus | Yes | Yes |
| Auto Focus | No | Yes |
| Build Quality | Good | Excellent |
| Image Quality | Good | Very Good |
| Filter Size | 62mm | N/A |
Dimension comparison
Overview of the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens
The EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens is priced at $65.69, making it a more budget-friendly option compared to the YONGNUO YN50mm F1.8 Lens, which retails for $82.00. This lens is designed for Canon DSLR cameras and offers a manual focus experience that encourages photographers to refine their skills. With a focal length range of 420-800mm, it excels in capturing distant subjects like wildlife and landscapes, providing an impressive zoom capability for various photography needs.
Overview of the YONGNUO YN50mm F1.8 Lens
The YONGNUO YN50mm F1.8 Lens, priced at $82.00, is a great choice for photographers looking for a lens that supports both auto and manual focus modes. This lens features a large aperture of F1.8, which delivers beautiful background blur and enhances low-light performance. Unlike the 420-800mm lens, this lens is more versatile for everyday photography, making it suitable for portraits and street photography. Its compatibility with full-frame and APS-C format cameras adds to its appeal, making it a solid option for a wide range of Canon users.
Image Quality and Performance
When it comes to image quality, the EF/EF-S 420-800mm F8.3 lens is tailored for capturing detailed images of distant subjects, but it requires manual focus, which can be a barrier for some users. Its internal focus mechanism and UMC technology help in minimizing aberrations and flare. On the other hand, the YONGNUO YN50mm F1.8 lens boasts a multi-coated lens structure that enhances light transmittance, thus improving overall image quality. The F1.8 aperture allows for a shallower depth of field, making it particularly effective for portrait photography.
Focus Mechanism and Usability
The EF/EF-S 420-800mm lens is fully manual, requiring users to switch their camera to manual mode immediately after installation. This design fosters a professional manual focus experience, but it may deter novices who are not yet comfortable with manual settings. Conversely, the YONGNUO YN50mm F1.8 lens supports both auto focus and manual focus modes, which enhances its usability for a broader range of photographers. The inclusion of a focus distance indicator at 0.45 meters on the YN50mm lens also aids in convenient shooting.
Compatibility and Mounting
The EF/EF-S 420-800mm lens is designed for a wide variety of Canon EOS models, including the Rebel series and the full-frame 5D series, making it highly versatile within the Canon ecosystem. It is compatible with 62mm filters and EF/EF-S mounts. The YONGNUO YN50mm F1.8 lens also supports a range of Canon cameras and is compatible with both full-frame and APS-C formats. This compatibility makes it a practical choice for photographers who own multiple Canon cameras.
Build Quality and Design
The EF/EF-S 420-800mm F8.3 lens features a robust design that emphasizes durability and stability, which is crucial for telephoto lenses used in various outdoor conditions. The lens’s large focus ring allows for precise adjustments, enhancing the shooting experience. In contrast, the YONGNUO YN50mm F1.8 lens uses gold plating for its metal contacts to improve signal conductivity and corrosion resistance, indicating a focus on longevity and performance in varied environments.
Price Comparison
The EF/EF-S 420-800mm F8.3 lens is currently available for $65.69, making it approximately 20% cheaper than the YONGNUO YN50mm F1.8 lens, which costs $82.00. This price difference may appeal to photographers who are budget-conscious or looking for a specialized lens without breaking the bank. However, the additional features and versatility of the YN50mm may justify its higher price for those who prioritize autofocus capabilities and a wider aperture.
Which should you buy?
When deciding between the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens and the YONGNUO YN50mm F1.8 Lens, consider your photography needs. If you primarily shoot distant subjects and enjoy the challenge of manual focus, the EF/EF-S 420-800mm lens offers excellent value at $65.69. However, if you prefer a versatile lens that supports both auto and manual focus, particularly for portraits and everyday shooting, the YONGNUO YN50mm lens, though pricier at $82.00, might be the better investment. Ultimately, both lenses provide unique advantages tailored to different styles of photography.

