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Canon EF-S 55- vs lightdow EF/EF-S 420-

Updated July 2026 — full head-to-head comparison.

Overview of the Canon EF-S 55-250mm F4-5.6 is STM

The Canon EF-S 55-250mm F4-5.6 is STM is priced at $329.99. This lens is designed primarily for photographers looking for a lightweight telephoto zoom lens with advanced image stabilization features. Its compact design makes it an ideal choice for travel and outdoor photography, offering a focal length that ranges from 55mm to 250mm. The lens also includes a UD lens element that helps in reducing chromatic aberration, ensuring high-resolution images with excellent contrast.

The lens is known for its fast and silent operation, which is particularly beneficial for shooting video or capturing spontaneous moments. With a minimum focusing distance of 2.79 feet, it provides flexibility for close-up shots as well. Overall, this lens is well-suited for both amateur and semi-professional photographers seeking quality performance in a versatile package.

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 significantly cheaper at $67.99, making it about 79% less expensive than the Canon EF-S 55-250mm. Unlike the Canon lens, this product is a fully manual focus lens, allowing photographers more control over their settings, but requiring a steeper learning curve. The lens is designed for those who wish to engage deeply with their photography, offering a super telephoto range that is ideal for wildlife and sports photography.

This lens features an internal focusing mechanism and UMC technology to minimize aberrations and flare, resulting in sharp images. It is compatible with a wide range of Canon DSLR cameras, making it a versatile option for users with various Canon models. However, the lack of electronic contacts for focusing means that users must switch their cameras to manual mode, which could be a drawback for some.

Build Quality and Design

The Canon EF-S 55-250mm is built with a focus on compactness and light weight, weighing just 1.2 lbs. This makes it an excellent choice for extended shooting sessions without causing fatigue. Its design includes a six-group zoom system that contributes to its lightweight nature while maintaining high optical quality.

On the other hand, the EF/EF-S 420-800mm is designed to be a robust lens tailored for professional use. While it is compatible with many Canon models, its fully manual focus design means that it is less user-friendly for those accustomed to automatic lenses. The lens's larger size and weight may also be a consideration for photographers looking for portability.

Image Quality

The Canon EF-S 55-250mm lens is noted for its excellent image quality, thanks to its UD lens element that minimizes chromatic aberration. This results in high-resolution images with outstanding contrast across its zoom range. The improved image stabilization also ensures that shots remain clear and crisp, even in challenging shooting conditions.

In contrast, the EF/EF-S 420-800mm lens incorporates UMC technology to reduce aberrations and flare, providing sharp images with beautiful background bokeh. However, the manual focus design may challenge some photographers when it comes to achieving optimal sharpness quickly. Therefore, while the manual lens offers superior reach, it may require more skill to match the image quality produced by the Canon lens.

Focusing Mechanism

The focusing mechanism of the Canon EF-S 55-250mm is fast and silent, making it suitable for various shooting scenarios, including video. This feature is particularly advantageous for photographers who need to capture fleeting moments without drawing attention to their equipment.

In stark contrast, the EF/EF-S 420-800mm relies entirely on manual focus. This design allows for precise control but requires users to have a solid understanding of manual camera settings. This lens is perfect for those who enjoy the art of photography and want to fully engage with their equipment, but it may not be the best choice for beginners or those who prioritize speed and convenience.

Versatility and Compatibility

The Canon EF-S 55-250mm is versatile and compatible with a range of Canon DSLR cameras, making it an ideal choice for amateur photographers looking to explore different styles of photography. Its focal length range is suitable for everything from portraits to landscapes, offering a lot of creative flexibility.

The EF/EF-S 420-800mm lens also boasts wide compatibility, working with numerous Canon models. However, its specialized focal length is more tailored for wildlife and sports photography, making it less versatile for general use. Photographers looking for a lens to cover a broad spectrum of scenarios may find the Canon EF-S 55-250mm more appealing.

Price Comparison

The price difference between these two lenses is significant, with the Canon EF-S 55-250mm retailing at $329.99 and the EF/EF-S 420-800mm available for just $67.99. This represents a whopping $262 difference, or about 79% less for the EF/EF-S lens. While the lower price may be appealing, it is essential to consider the trade-offs in functionality and ease of use that come with the manual focus design of the EF/EF-S lens.

Which should you buy?

Ultimately, the choice between the Canon EF-S 55-250mm F4-5.6 is STM and the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens depends on your specific needs and skill level. If you are looking for a lightweight, user-friendly lens with excellent image quality and image stabilization features, the Canon EF-S 55-250mm is the better option. On the other hand, if you are an experienced photographer seeking a budget-friendly lens with a super telephoto range and are comfortable with manual focusing, the EF/EF-S 420-800mm could be a suitable choice.