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Canon EF vs lightdow EF/EF-S 420-

Updated July 2026 — Canon EF wins on price, lightdow EF/EF-S 420- wins on focal length and weight.

The Canon EF 50mm f/1.8 STM Lens excels in low-light performance and autofocus, making it a better choice for versatile photography. The EF/EF-S 420-800mm lens is more budget-friendly but requires manual focus.

Why Canon EF is better

Low-light Performance

f/1.8 aperture allows for better low-light shooting

Autofocus

Stepping motor provides quick and silent autofocus

Build Quality

Compact and lightweight design for portability

Why lightdow EF/EF-S 420- is better

Price

Significantly lower price at $65.69

Focal Range

420-800mm range for distant subjects

Manual Control

Allows for precise manual focus adjustments

Overall score

Canon EF
85
lightdow EF/EF-S 420-
65

Specifications

SpecCanon EFlightdow EF/EF-S 420-
Focal Length50mm420-800mm
Max Aperturef/1.8f/8.3
Focus TypeAutofocusManual
Weight159g800g
Build QualityMetal mountPlastic

Dimension comparison

Canon EFlightdow EF/EF-S 420-

Overview of the Canon EF 50mm f/1.8 STM Lens

The Canon EF 50mm f/1.8 STM Lens is a compact and lightweight prime lens perfect for a variety of photography styles, particularly portraits and low-light conditions. Priced at $169.00, it offers a versatile 50mm focal length on full-frame cameras and an effective 80mm on APS-C models. Its bright f/1.8 maximum aperture allows for excellent shallow depth of field and beautiful background blur, making it ideal for capturing sharp images in dim environments. The lens features a stepping motor for near-silent autofocus, enhancing the experience for both still photography and videography.

Overview of the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens

The EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens offers an impressive focal length range designed for capturing distant subjects. At a significantly lower price of $65.69, this lens is a fully manual focus model, which provides precise control over focus settings but requires users to adapt their shooting techniques accordingly. It is compatible with a wide range of Canon cameras, making it a versatile option for wildlife and landscape photography. Despite its lack of electronic contacts, the lens is designed to minimize aberrations and flare, ensuring quality images.

Focal Length and Aperture Comparison

The Canon EF 50mm f/1.8 STM Lens has a fixed focal length of 50mm, which excels in portrait and low-light photography. Its wide aperture of f/1.8 allows for more light to enter, making it suitable for shooting in darker conditions and achieving a lovely bokeh effect. In contrast, the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens offers a much broader range of focal lengths from 420mm to 800mm, ideal for capturing distant subjects like wildlife or sports. However, its maximum aperture of f/8.3 at 420mm limits its low-light performance compared to the Canon EF 50mm f/1.8.

Autofocus vs. Manual Focus

The Canon EF 50mm f/1.8 STM features a stepping motor for autofocus, providing quick and nearly silent operation, making it an excellent choice for shooting both photos and videos. This is particularly beneficial for capturing spontaneous moments without disturbing the environment. On the other hand, the EF/EF-S 420-800mm lens relies entirely on manual focus. While this allows for precise control and artistic freedom, it may be challenging for those not accustomed to manual focusing, especially in fast-paced shooting situations.

Build Quality and Design

The build quality of the Canon EF 50mm f/1.8 STM Lens is robust yet lightweight, featuring a metal mount and a compact design that makes it easy to carry. Its improved minimum focusing distance of 1.15 feet (0.35 meters) also enhances its usability for close-up shots. In comparison, the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens is designed for longevity and stability but is inherently bulkier due to its zoom capabilities and longer focal range. This design may be less convenient for everyday use compared to the more portable 50mm lens.

Target Audience and Use Cases

The Canon EF 50mm f/1.8 STM Lens is ideal for beginner and intermediate photographers who want to explore portrait photography, street photography, and videography. Its ease of use and effective performance in low-light conditions make it a go-to lens for many. Conversely, the EF/EF-S 420-800mm lens caters to wildlife photographers and those interested in landscape photography who require the ability to capture distant subjects. Its manual focus design appeals to photographers seeking more control over their shots, although it may not be suitable for all users.

Price Comparison and Value

At $169.00, the Canon EF 50mm f/1.8 STM Lens is more expensive than the EF/EF-S 420-800mm lens, which retails for $65.69. This represents a price difference of about 60%, making the telephoto lens a more budget-friendly option, particularly for those not ready to invest heavily in a prime lens. However, the higher price of the 50mm lens reflects its advanced features, such as superior low-light performance and autofocus capabilities, potentially offering better value for specific photography needs.

Which should you buy?

Choosing between the Canon EF 50mm f/1.8 STM Lens and the EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens ultimately depends on your photography style and needs. If you're looking for versatility, excellent low-light performance, and the convenience of autofocus, the Canon EF 50mm f/1.8 is the better choice, albeit at a higher price. However, if you require a budget-friendly option for capturing distant subjects and are comfortable with manual focusing, the EF/EF-S 420-800mm lens provides significant range and compatibility at a fraction of the cost.