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Canon EF 75- vs lightdow EF/EF-S 420-

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

Overview of the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens

The Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens is a versatile option for photographers looking for a reliable telephoto lens. Priced at $169.00, it offers a focal length range of 75-300mm with a maximum aperture of f/4-5.6. This lens features a construction of 13 elements in 9 groups, providing a diagonal angle of view between 32° 11' and 8° 15'. Its front group rotating extension system allows for a closest focusing distance of 1.5m (4.9 ft), making it suitable for a variety of shooting situations, including wildlife and sports photography.

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 a budget-friendly option at $67.99, offering an impressive focal length range of 420-800mm. Designed for manual focus, it provides photographers with precise control over their shots. This lens adopts a fully manual focus design, which challenges users to adjust parameters such as shutter speed, ISO, and aperture. This experience is ideal for photographers looking to hone their skills while exploring creative possibilities. The lens is compatible with various Canon EOS models, enhancing its adaptability for different users.

Price Comparison

When comparing prices, the EF/EF-S 420-800mm lens is significantly cheaper, retailing at $67.99, which is about 60% less than the Canon EF 75-300mm lens at $169.00. This price difference may be a decisive factor for budget-conscious photographers or beginners entering the world of telephoto photography. However, the lower price of the EF/EF-S 420-800mm lens comes with the trade-off of requiring manual focus, which may not be ideal for all users, particularly those accustomed to automatic focusing systems.

Focal Length and Versatility

The Canon EF 75-300mm lens offers a focal length range of 75-300mm, allowing for versatile shooting in various situations, from portraits to sports. In contrast, the EF/EF-S 420-800mm lens boasts an extensive focal length range of 420-800mm, making it suitable for long-distance photography, such as wildlife and sports events. This extended range provides photographers with an opportunity to capture distant subjects without needing to physically approach them. However, the versatility of the Canon lens in a broader range of scenarios may appeal to those who value flexibility in their photography.

Focus and Control

The Canon EF 75-300mm lens features a front group rotating extension system with a micromotor for focus adjustment, allowing for relatively straightforward operation. In contrast, the EF/EF-S 420-800mm lens is fully manual, requiring users to take charge of their focus, which can enhance the learning experience. While manual focus provides greater control over depth of field and composition, it may also pose a challenge for less experienced photographers. This difference in focusing systems can greatly influence the overall shooting experience, depending on the user's skill level and preferences.

Build Quality and Image Quality

Both lenses are designed to deliver good image quality, but they cater to different user levels. The Canon EF 75-300mm lens is built with a focus on ease of use and reliability, making it a solid choice for those who want a straightforward telephoto lens. On the other hand, the EF/EF-S 420-800mm lens emphasizes a professional manual focus experience, which can lead to exceptional image quality for those willing to invest the time in mastering manual settings. However, the complexity of the manual system may deter some users from achieving optimal results.

Compatibility

The Canon EF 75-300mm lens is compatible with a wide range of Canon cameras, making it a versatile choice for many users. The EF/EF-S 420-800mm lens also boasts broad compatibility, specifically designed for various Canon EOS models, including the Rebel series and 5D Mark IV. This extensive compatibility ensures that users can easily match their lens choice with their camera body, enhancing the overall user experience and enabling photographers to maximize their gear's potential.

Which should you buy?

Choosing between the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens and the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens ultimately depends on your photography needs and experience level. If you prefer a user-friendly lens with automatic focusing and a versatile range for general shooting, the Canon lens is a solid investment. However, if you are more experienced and looking for a budget-friendly option that allows for extensive focal lengths and manual control, the EF/EF-S 420-800mm lens may better suit your creative pursuits. Each lens offers unique advantages, so weigh your priorities carefully before making a decision.