Canon EF 75- vs Canon RF-S18-
Updated July 2026 — Canon EF 75- wins on zoom and weight, Canon RF-S18- wins on stability and price.
The Canon RF-S18-45mm is a more versatile and budget-friendly option, while the Canon EF 75-300mm excels in zoom range for distant subjects.
Why Canon EF 75- is better
Zoom Range
75-300mm is better for distant subjects
Build Quality
Sturdier construction for long-term use
Brand Reputation
Established lens with a long history
Why Canon RF-S18- is better
Price
$87.00 is significantly cheaper
Portability
Compact and lightweight design
Image Stabilization
Up to 6 stops of shake correction
Overall score
Specifications
| Spec | Canon EF 75- | Canon RF-S18- |
|---|---|---|
| Focal Length | 75-300mm | 18-45mm |
| Max Aperture | f/4-5.6 | f/4.5-6.3 |
| Image Stabilization | No | Yes |
| Autofocus | Micromotor | STM |
| Construction | 13 elements | 2 Aspheric |
Dimension comparison
Introduction to the Comparison
In this comparison, we will explore the differences between the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens and the Canon RF-S18-45mm F4.5-6.3 Lens. Both lenses are designed for different purposes and target audiences, making them suitable options for photographers with varying needs. The Canon EF 75-300mm is priced at $169.00, while the RF-S18-45mm offers a more budget-friendly option at $87.00, making it about 48% cheaper.
Design and Build Quality
The design and build quality of a lens significantly impact its usability and portability. The Canon RF-S18-45mm is a compact and lightweight lens, making it convenient for everyday photography and travel. Its small size allows it to fit easily into camera bags, which is ideal for photographers on the go. In contrast, the Canon EF 75-300mm, while still manageable, is larger and may not be as easy to transport for extended periods. This difference in design can affect the choice for users who prioritize portability.
Focal Length and Versatility
Focal length is a critical factor when choosing a lens, and both models offer unique benefits. The Canon EF 75-300mm boasts a focal length range of 75-300mm, making it highly versatile for capturing distant subjects, such as wildlife or sports. On the other hand, the Canon RF-S18-45mm has a more modest zoom range of 18-45mm, which is better suited for everyday photography, landscapes, and portraits. Depending on your shooting style, the choice between these focal lengths can greatly influence your photography experience.
Image Quality
Image quality is essential for any photographer, and both lenses deliver impressive results within their design intentions. The Canon RF-S18-45mm features advanced optics with two Aspheric elements and Canon Super Spectra Coating, which contributes to excellent image quality and reduced lens flare. The Canon EF 75-300mm, while capable of producing good images, may not match the RF-S18-45mm in terms of optical quality, especially in challenging lighting conditions. This difference may appeal to those who prioritize clarity and sharpness in their images.
Autofocus Performance
Autofocus performance is crucial for capturing sharp images, especially in dynamic settings. The Canon RF-S18-45mm is equipped with a lead screw-type stepping motor (STM), which ensures smooth and quiet autofocus, making it an excellent choice for video recording as well. The Canon EF 75-300mm employs a front group rotating extension system with a Micromotor for focus adjustment, which can be less efficient than the STM technology in the RF-S18-45mm. For photographers who frequently shoot moving subjects or record videos, the superior autofocus of the RF-S18-45mm may be a significant advantage.
Image Stabilization
Both lenses come with image stabilization features, but their effectiveness differs. The Canon RF-S18-45mm offers optical image stabilization with up to 4 stops of shake correction, which can be enhanced to 6 stops when paired with compatible EOS R cameras featuring In-Body Image Stabilizer (IBIS). This capability is invaluable for handheld shooting in low-light conditions. In contrast, the Canon EF 75-300mm lacks this advanced stabilization technology, which may lead to more noticeable blur in images taken at slower shutter speeds. This aspect may sway users who often shoot without a tripod.
Price and Value
When it comes to price, the Canon RF-S18-45mm is significantly less expensive at $87.00, compared to the Canon EF 75-300mm at $169.00. This pricing makes the RF-S18-45mm about 48% cheaper, which is an important consideration for budget-conscious photographers. While both lenses offer great value, the lower cost of the RF-S18-45mm, paired with its advanced features, may present a more attractive option for many users, particularly those starting in photography or seeking a versatile daily lens.
Target Audience and Use Cases
The target audience for each lens varies significantly. The Canon EF 75-300mm is tailored for photographers looking to capture distant subjects, making it ideal for wildlife and sports photography. In contrast, the Canon RF-S18-45mm caters to a broader audience, including casual shooters and vloggers who require a compact, versatile lens for various scenarios. Understanding these target audiences can help potential buyers make an informed decision based on their specific photography needs.
Which should you buy?
In conclusion, the choice between the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens and the Canon RF-S18-45mm F4.5-6.3 Lens ultimately depends on your photography style and requirements. If you need a lens for distant subjects with a larger zoom range and are willing to invest more, the Canon EF 75-300mm may suit you. However, if you’re looking for a budget-friendly, compact lens that excels in everyday photography and video recording, the Canon RF-S18-45mm is a compelling choice.

