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lightdow EF/EF-S 420- vs YNLENS YONGNUO YN50mm

Updated July 2026 — lightdow EF/EF-S 420- wins on weight and focal length, YNLENS YONGNUO YN50mm wins on price and build quality.

The EF/EF-S 420-800mm lens is a budget-friendly option with a wide focal range, while the YONGNUO YN50mm excels in low-light and portrait photography.

Why lightdow EF/EF-S 420- is better

Price

The EF/EF-S lens is significantly cheaper.

Focal Range

Offers a broader focal length range.

Manual Focus

Provides a fully manual focus experience.

Why YNLENS YONGNUO YN50mm is better

Aperture

Larger aperture for low-light performance.

Weight

Lighter and more portable design.

User Experience

Automatic/manual switching for easier use.

Overall score

lightdow EF/EF-S 420-
70
YNLENS YONGNUO YN50mm
85

Specifications

Speclightdow EF/EF-S 420-YNLENS YONGNUO YN50mm
Lens TypeZoomPrime
Focus TypeManualAuto/Manual
Max Aperturef/8.3f/1.8
Min Focus2.5m0.45m
Camera MountCanon EF/EF-SNikon F

Dimension comparison

lightdow EF/EF-S 420-YNLENS YONGNUO YN50mm

Price Comparison

The EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens is priced at $65.69, making it about 36% cheaper than the YONGNUO YN50mm 50mm f/1.8 Lens, which retails for $102.00. This significant price difference could be a deciding factor for photographers on a budget. While the 420-800mm lens offers a broader focal range, the 50mm lens provides a large aperture for low-light conditions and portrait photography. Therefore, the choice between the two may hinge on whether you prioritize cost or specific photographic capabilities.

Design and Build Quality

The EF/EF-S 420-800mm lens features a fully manual design, which offers photographers precise control over focus, shutter speed, ISO, and aperture. Its internal focus mechanism is complemented by a large focus ring, allowing for a more tactile shooting experience. In contrast, the YONGNUO YN50mm lens has a compact design weight of only 203g, making it travel-friendly. It also boasts a high-precision metal bayonet and gold-plated contacts, suggesting a robust build quality. While both lenses have their merits, the choice may depend on whether you favor a heavier, more versatile lens or a lightweight, travel-oriented option.

Focal Length and Versatility

The EF/EF-S 420-800mm lens has a remarkable focal length range of 420-800mm, ideal for capturing detailed images of distant subjects, such as wildlife or landscapes. This versatility allows for creative photographic exploration. On the other hand, the YONGNUO YN50mm lens offers a fixed focal length of 50mm, which is well-suited for standard photography and portraits. The versatility of the zoom lens may outweigh the fixed lens for some photographers, particularly those who enjoy shooting in varied conditions. However, the prime lens excels in creating professional portraits with beautiful background blur.

Aperture and Light Performance

The YONGNUO YN50mm lens features a large aperture of f/1.8, which allows for exceptional low-light performance and the ability to create creamy background blur. This capability is particularly beneficial for wedding photography and artistic storytelling. In contrast, the EF/EF-S 420-800mm lens has a maximum aperture of f/8.3 at 420mm, which narrows to f/16 at 800mm. While it is not designed for low-light conditions, it is effective for capturing distant subjects in well-lit environments. For photographers who prioritize low-light performance and artistic depth of field, the YONGNUO lens is the clear choice.

Compatibility

The EF/EF-S 420-800mm lens is compatible with a wide range of Canon cameras, including the EOS Rebel series and several 5D and 7D models. This broad compatibility makes it a versatile option for Canon users. Meanwhile, the YONGNUO YN50mm lens is specifically designed for Nikon F-mount cameras, including models like the D3000 and D5000 series. If you already own a camera from one of these brands, your choice will heavily depend on lens compatibility. This factor can significantly affect your decision, particularly if you are invested in a particular camera ecosystem.

User Experience

With its fully manual focus design, the EF/EF-S 420-800mm lens offers a unique user experience that encourages photographers to refine their skills. This lens requires careful adjustment of shutter speed, ISO, and aperture, promoting a hands-on approach to photography. Conversely, the YONGNUO YN50mm lens features automatic and manual switching for intuitive aperture control and depth of field adjustments. This makes it more accessible for beginners or those who prefer a less hands-on approach. Depending on your experience level and shooting style, one lens may provide a more enjoyable user experience than the other.

Intended Use

The EF/EF-S 420-800mm lens excels at capturing images of distant subjects, making it ideal for wildlife, landscapes, and even astrophotography. Its long focal length is perfect for photographers who want to bring faraway objects into sharp focus. In contrast, the YONGNUO YN50mm lens is tailored for portrait photography and close-up shots, thanks to its large aperture and ability to create a shallow depth of field. Depending on your photographic interests, one lens may be more suited to your needs. If you often shoot distant subjects, the telephoto zoom lens will likely serve you better.

Which should you buy?

The decision between the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens and the YONGNUO YN50mm 50mm f/1.8 Lens largely depends on your photography style and needs. If you are looking for a budget-friendly option that offers a wide range for distant subjects, the EF/EF-S lens is the way to go. Conversely, if low-light performance and portrait capabilities are your priority, the YONGNUO lens stands out. Ultimately, your choice should align with the type of photography you wish to pursue, as each lens excels in different areas.