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Canon RF45mm F1.2 STM vs Canon RF75-

Updated July 2026 — Canon RF45mm F1.2 STM wins on aperture, Canon RF75- wins on focal length and weight.

The Canon RF45mm F1.2 STM excels in low-light performance and image quality, while the RF75-300mm F4-5.6 offers versatility and value for budget-conscious photographers.

Why Canon RF45mm F1.2 STM is better

Image Quality

Superior low-light performance with f/1.2 aperture

Bokeh

Creates beautiful background blur for portraits

Build Quality

Designed for high-quality imagery

Why Canon RF75- is better

Price

Significantly cheaper at $239.00

Versatility

Wide focal length range from 75mm to 300mm

Accessories

Includes UV filter and cleaning kit

Overall score

Canon RF45mm F1.2 STM
85
Canon RF75-
70

Specifications

SpecCanon RF45mm F1.2 STMCanon RF75-
Aperturef/1.2f/4-5.6
Focal Length45mm75-300mm
Weight1.5 lbs0.9 lbs
Price$469.00$239.00
BokehExcellentGood

Dimension comparison

Canon RF45mm F1.2 STMCanon RF75-

Overview of the Canon RF45mm F1.2 STM and Canon RF75-300mm F4-5.6 Zoom Lens

The Canon RF45mm F1.2 STM lens is a standard prime lens offering exceptional wide-aperture performance, while the Canon RF75-300mm F4-5.6 Zoom Lens provides versatility with an impressive focal length range. Priced at $469.00, the RF45mm is designed for creators seeking a compact and economical lens that excels in low-light conditions. In contrast, the RF75-300mm is priced at $239.00, making it about 49% cheaper, while also providing a portable option for capturing distant subjects. Each lens serves distinct photographic needs, so understanding their characteristics is crucial for making the right choice.

Design and Portability

When it comes to design, the RF75-300mm F4-5.6 Zoom Lens shines as a compact and lightweight option, resembling the weight of a 500ml water bottle. This makes it ideal for photographers who require a lens that is easy to carry around without feeling cumbersome. The RF45mm F1.2 STM, while also compact, is primarily designed for high-quality images rather than portability, making it a bit heavier due to its larger diameter and wide aperture. For those prioritizing ease of transport, the RF75-300mm is a standout option.

Aperture and Image Quality

The RF45mm F1.2 STM lens boasts a remarkable f/1.2 aperture, which allows for faster shutter speeds in low-light scenarios, enabling high-quality imagery even in challenging lighting conditions. This wide aperture also facilitates beautiful bokeh effects, isolating subjects from backgrounds and providing a three-dimensional look. Conversely, the RF75-300mm has a variable aperture of f/4-5.6, which may limit its performance in low-light situations. However, the RF75-300mm compensates with its versatility in focal lengths, offering a unique image quality suitable for various shooting styles.

Focal Length Versatility

The RF75-300mm's focal length range of 75mm to 300mm provides significant versatility, making it ideal for capturing a wide array of subjects—from distant wildlife to portraits. This lens allows photographers to change the feel of their images dramatically through zoom capabilities, which is particularly beneficial for those who often find themselves in varying shooting scenarios. On the other hand, the RF45mm's fixed 45mm focal length makes it better suited for specific types of photography, such as portraits or lifestyle shoots, but lacks the zoom versatility offered by the RF75-300mm.

Autofocus Capabilities

Both lenses feature advanced autofocus capabilities, but they excel in different areas. The RF75-300mm is equipped with Servo AF, which enables eye detection even at 300mm, ensuring that subjects’ pupils are in sharp focus—ideal for dynamic subjects like children or animals. The RF45mm, while not specifically highlighted for advanced autofocus features, benefits from its prime lens design, which typically offers faster and more accurate focusing in still scenarios. Thus, if rapid autofocus in various conditions is essential, the RF75-300mm may have an edge.

Additional Accessories and Value

The RF75-300mm package includes a UV filter, lens cap keeper, and a cleaning kit, adding considerable value for those looking to maintain their equipment. This additional kit enhances the overall user experience and convenience, especially for beginners who may not have these accessories. Conversely, the RF45mm does not include any additional accessories in its offering, which could be a drawback for customers seeking a comprehensive package. The presence of these extras in the RF75-300mm's offering makes it appealing for budget-conscious buyers.

Pricing Comparison

The RF45mm F1.2 STM is priced at $469.00, while the RF75-300mm is significantly cheaper at $239.00, making it about 49% less expensive. This substantial price difference means that the RF75-300mm offers great value, especially for photographers on a budget or those who are just starting and may not want to invest heavily in a lens. The cost-effectiveness of the RF75-300mm, combined with its versatility, makes it an attractive option for many consumers.

Which should you buy?

Deciding between the Canon RF45mm F1.2 STM and the Canon RF75-300mm F4-5.6 Zoom Lens depends significantly on your photographic needs. If you prioritize low-light performance and exquisite image quality, the RF45mm is an excellent choice despite its higher price. However, if versatility, portability, and value for money are more important in your photography journey, the RF75-300mm stands out as a more economical option. Ultimately, your choice should align with your specific shooting preferences and budget.