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Canon 344B006 EF 24- vs Canon RF-S55-

Updated July 2026 — Canon 344B006 EF 24- wins on price and weight, Canon RF-S55- wins on zoom range and aperture.

The Canon 344B006 EF 24-105mm f/4.0 L is USM Lens offers more versatility and build quality, while the RF-S55-210mm is a more budget-friendly option with excellent telephoto capabilities.

Why Canon 344B006 EF 24- is better

Versatility

24-105mm zoom range is suitable for various photography styles.

Build Quality

Robust design suitable for demanding environments.

Aperture Control

Consistent f/4 aperture allows better exposure control.

Why Canon RF-S55- is better

Price

20% cheaper than the Canon 344B006.

Telephoto Range

Extended 55-210mm range ideal for distant subjects.

Lightweight

Compact design makes it easy to carry.

Overall score

Canon 344B006 EF 24-
85
Canon RF-S55-
78

Specifications

SpecCanon 344B006 EF 24-Canon RF-S55-
Focal Length24-105mm55-210mm
Image StabilizationUSMOptical
AutofocusUSMSTM
Filter Size77mm67mm
Minimum Focus1.5ft2.4ft

Dimension comparison

Canon 344B006 EF 24-Canon RF-S55-

Price Comparison

The Canon RF-S55-210mm F5-7.1 is STM is about 20% cheaper than the Canon 344B006 EF 24-105mm f/4.0 L is USM Lens. Priced at $409.00, the RF-S55-210mm offers a more budget-friendly option for photographers seeking a versatile telephoto lens. In contrast, the 24-105mm lens is priced at $509.00. This price difference of $100 can be significant for those who are looking to expand their lens collection without breaking the bank.

Lens Versatility

The Canon 344B006 EF 24-105mm f/4.0 L is USM Lens provides a versatile zoom range of 24-105mm, making it suitable for various photography styles, from landscapes to portraits. This lens is particularly well-regarded for its consistent f/4 aperture throughout the zoom range, allowing for better control over exposure. On the other hand, the Canon RF-S55-210mm F5-7.1 is STM offers an extended range of 55-210mm, which is ideal for capturing distant subjects. While this lens is designed specifically for APS-C sensor cameras, it provides full-frame equivalent coverage of approximately 88-336mm, making it incredibly versatile for telephoto use.

Image Stabilization

When it comes to image stabilization, the Canon RF-S55-210mm F5-7.1 is STM offers superior capabilities with up to 4.5 stops of shake correction and up to 7.0 stops when paired with EOS R series cameras featuring In-Body Image Stabilizer (IBIS). This feature is particularly beneficial for handheld shooting, especially in low-light conditions. The Canon 344B006 EF 24-105mm f/4.0 L is USM also includes image stabilization, thanks to its ultrasonic motor (USM), but it does not specify the level of shake correction. This makes the RF-S55-210mm a more reliable option for photographers who prioritize stability in their shots.

Autofocus System

The autofocus systems of both lenses are designed to enhance the shooting experience, but they serve different needs. The Canon 344B006 EF 24-105mm f/4.0 L is USM utilizes an ultrasonic motor for silent and precise focusing, which is advantageous for both still photography and video work. Conversely, the Canon RF-S55-210mm F5-7.1 is STM features a stepping motor (STM) that supports Canon’s Movie Servo AF, which ensures smooth and quiet focus adjustments during video recording. This makes the RF-S55-210mm particularly appealing for videographers or anyone who needs quick and silent focusing.

Build Quality and Design

In terms of design, the Canon 344B006 EF 24-105mm f/4.0 L is USM exudes a professional quality with a robust build, suitable for demanding environments. It includes a filter size of 77 mm, allowing for greater customization with filters. The RF-S55-210mm, being a compact and lightweight lens, is designed to be easily portable, making it an excellent option for travel photographers. While the 24-105mm lens may be better suited for more professional setups, the RF-S55-210mm is designed to meet the needs of users looking for a lightweight option without sacrificing image quality.

Image Quality

Both lenses deliver impressive image quality, but they do so in different contexts. The Canon RF-S55-210mm F5-7.1 is STM boasts two Ultra-low Dispersion (UD) glass elements and one aspheric element, along with Canon Super Spectra Coating (SSC), which minimizes ghosting and flare, thereby enhancing overall image clarity. The Canon 344B006 EF 24-105mm f/4.0 L is USM is also known for its high-quality optics, but specific details about its lens elements are not provided. However, its consistent f/4 aperture across the zoom range allows for better control over depth of field, making it ideal for portraits and creative shots.

Target Audience

The Canon RF-S55-210mm F5-7.1 is STM is primarily aimed at APS-C camera users, particularly those with models like the EOS R50, R10, and R7. Its lightweight design and extended focal range make it perfect for travel and outdoor photography. In contrast, the Canon 344B006 EF 24-105mm f/4.0 L is USM targets a more professional audience, ideal for photographers who require versatility and performance in a single lens. Its robust build and performance make it suitable for both amateur and pro photographers looking for reliability in various shooting conditions.

Which should you buy?

Choosing between the Canon 344B006 EF 24-105mm f/4.0 L is USM Lens and the Canon RF-S55-210mm F5-7.1 is STM ultimately depends on your specific photographic needs. If you're looking for a versatile lens that can handle a variety of shooting situations and you're willing to invest a bit more, the 24-105mm is a solid choice. However, if you're seeking a more budget-friendly option that excels in telephoto capabilities and portability, the RF-S55-210mm is an excellent alternative. Given the significant price difference and the specialized features of each lens, carefully consider your photography style to make the best choice.