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Canon EF 75- vs Canon RF45mm F1.2 STM

Updated July 2026 — Canon EF 75- wins on versatility and weight, Canon RF45mm F1.2 STM wins on aperture and image quality.

The Canon RF45mm F1.2 STM excels in image quality and low-light performance, while the Canon EF 75-300mm offers versatility at a lower price.

Why Canon EF 75- is better

Price

The EF 75-300mm is significantly cheaper.

Versatility

The zoom range allows for various photography styles.

Weight

The EF 75-300mm is lighter and easier to handle.

Why Canon RF45mm F1.2 STM is better

Image Quality

The RF45mm offers superior low-light performance.

Aperture

The f/1.2 aperture allows for better subject isolation.

Build Quality

The RF45mm has a more premium design and optical performance.

Overall score

Canon EF 75-
70
Canon RF45mm F1.2 STM
90

Specifications

SpecCanon EF 75-Canon RF45mm F1.2 STM
Focal Length75-300mm45mm
Max Aperturef/4-5.6f/1.2
Closest Focus1.5m0.4m
Lens Elements13 elements5 elements
Weight480g650g

Dimension comparison

Canon EF 75-Canon RF45mm F1.2 STM

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 an excellent choice for photographers looking for versatility and reach. Priced at $169.00, it offers a focal length range of 75-300mm, making it suitable for a variety of shooting situations, from wildlife to sports. The lens features a front group rotating extension system with a Micromotor for focus adjustment, providing a closest focusing distance of 1.5 meters, or about 4.9 feet. This lens is constructed with 13 elements in 9 groups, ensuring good image quality across its zoom range.

Overview of the Canon RF45mm F1.2 STM

In contrast, the Canon RF45mm F1.2 STM is priced significantly higher at $469.00, reflecting its premium features. This standard prime lens boasts an impressive f/1.2 aperture, allowing for exceptional low-light performance and beautiful bokeh. The lens is designed with a large-diameter mount and short back focus, enabling digital distortion correction while maintaining a compact form. The RF45mm is particularly well-suited for portrait and lifestyle photography, offering a three-dimensional look that isolates subjects from their backgrounds.

Build Quality and Design

The build quality of the Canon EF 75-300mm is solid, considering its price point. However, it is designed primarily for functionality rather than premium materials. The lens is lightweight and manageable, making it a good option for extended shooting sessions. On the other hand, the Canon RF45mm F1.2 STM features a compact and ergonomic design that feels more luxurious, justified by its higher price. The advanced optical design minimizes aberrations, which is particularly impressive for a lens with such a wide aperture.

Image Quality

When it comes to image quality, the Canon RF45mm F1.2 STM stands out with its superior low-light capabilities and the ability to create stunning background blur. The f/1.2 aperture allows for faster shutter speeds, which is essential for capturing sharp images in darker environments. In contrast, the Canon EF 75-300mm produces good images, but its maximum aperture of f/4-5.6 may limit performance in low-light scenarios. Overall, photographers looking for the best quality will likely prefer the RF45mm.

Versatility

The versatility of the Canon EF 75-300mm is one of its key advantages. With a zoom range that allows for both wide-angle and telephoto shots, this lens is an excellent all-around choice for various photography styles. It can easily handle subjects that are far away, making it ideal for events like sports games or wildlife photography. Meanwhile, the RF45mm, being a prime lens, is less versatile in terms of focal length. However, it excels in specific scenarios like portraiture, where its f/1.2 aperture can create stunning effects.

Pricing and Value

The pricing difference between these two lenses is significant. The Canon EF 75-300mm is currently priced at $169.00, making it about 64% cheaper than the Canon RF45mm F1.2 STM, which retails for $469.00. This price difference may make the EF 75-300mm more appealing for budget-conscious photographers or those just starting. However, the value offered by the RF45mm, particularly in terms of image quality and low-light performance, could justify the higher investment for professional photographers or serious enthusiasts.

Intended Use and Target Audience

The Canon EF 75-300mm is well-suited for amateur photographers and hobbyists who need a flexible lens without breaking the bank. Its zoom capability makes it an excellent choice for a wide range of photography styles, from landscapes to wildlife shots. In contrast, the RF45mm F1.2 STM targets professionals and serious creators who require high-quality imagery, especially in portraiture and low-light conditions. Its advanced features make it an ideal investment for those who prioritize image quality and creative control.

Which should you buy?

Ultimately, the choice between the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens and the Canon RF45mm F1.2 STM hinges on your specific photography needs and budget. If you're looking for versatility and affordability, the EF 75-300mm is an excellent option, especially for casual photography. However, if high-quality imagery, particularly in low-light conditions, is your top priority, the RF45mm offers features that can significantly enhance your photography, albeit at a higher cost.