Canon RF75- vs OM SYSTEM Olympus M.Zuiko Digital 40-
Updated July 2026 — Canon RF75- wins on zoom and autofocus, OM SYSTEM Olympus M.Zuiko Digital 40- wins on value and weight.
The Canon RF75-300mm offers superior zoom capabilities and advanced autofocus features, while the Olympus lens is a more budget-friendly option. Ultimately, the choice depends on your specific needs.
Why Canon RF75- is better
Zoom Range
Canon offers a 75-300mm range compared to Olympus's 40-150mm.
Autofocus
Canon features advanced eye detection autofocus.
Brand Reputation
Canon is well-known for high-quality lenses.
Why OM SYSTEM Olympus M.Zuiko Digital 40- is better
Price
Olympus is priced at $175.99, making it more affordable.
Weight
Olympus is lighter and more portable for everyday use.
Compatibility
Olympus is compatible with a wider range of Micro Four Thirds cameras.
Overall score
Specifications
| Spec | Canon RF75- | OM SYSTEM Olympus M.Zuiko Digital 40- |
|---|---|---|
| Focal Length | 75-300mm | 40-150mm |
| Max Aperture | F4-5.6 | F4-5.6 |
| Autofocus Type | Eye Detection | High-Speed AF |
| Compatibility | Canon EOS R | Micro Four Thirds |
| Price | $239.00 | $175.99 |
Dimension comparison
Overview of the Canon RF75-300mm F4-5.6 Zoom Lens
The Canon RF75-300mm F4-5.6 Zoom Lens is designed specifically for Canon EOS R series cameras, offering a versatile focal length range. Priced at $239.00, this lens is positioned as a compact and lightweight option, making it easier to carry compared to traditional long-zoom lenses. Weighing about as much as a 500ml water bottle, it's an appealing choice for photographers seeking portability without sacrificing range. The lens features advanced autofocus capabilities, including eye detection, which enhances its usability for capturing moving subjects, particularly in portrait and wildlife photography.
Overview of the OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R
The OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R is a portable lens designed for Micro Four Thirds system cameras, retailing for $175.99. It offers a focal length of 40-150mm, providing a 3.75x zoom range that is suitable for various photographic situations. This lens features High-Speed Imager AF (MSC) technology, which allows for quick and accurate focusing. Its relatively lightweight design makes it a convenient option for photographers on the go, ensuring that they can capture images without the burden of a heavy lens.
Price Comparison
The Canon RF75-300mm is priced at $239.00, while the OM SYSTEM Olympus lens is available for $175.99, making the Olympus lens about 26% cheaper. This significant price difference may be a deciding factor for budget-conscious photographers. While the Canon lens provides a greater zoom range, the Olympus lens offers a more economical option without sacrificing essential features, making it an attractive choice for those on a budget. This price gap highlights the varying market positions of these two lenses, influencing potential buyers based on their financial considerations.
Focal Length and Zoom Range
The Canon RF75-300mm lens has a focal length that extends from 75mm to an impressive 300mm, allowing for greater versatility in capturing distant subjects. In contrast, the Olympus lens features a focal length of 40-150mm. This means that the Canon lens offers a zoom range that is significantly longer, which can be particularly beneficial for wildlife and sports photography. However, the Olympus lens still provides a respectable zoom capability with its 3.75x range, making it suitable for portraits and landscapes. The choice between these lenses will largely depend on the specific photographic needs of the user.
Autofocus Technology
The Canon RF75-300mm lens boasts advanced autofocus features, including eye detection capabilities. This allows for precise focusing on subjects’ pupils, even at the 300mm zoom range, enhancing the lens's performance for dynamic shooting situations. Conversely, the OM SYSTEM Olympus lens utilizes High-Speed Imager AF (MSC), which is designed to deliver rapid and accurate focusing as well. While both lenses provide effective autofocus systems, the Canon lens may have the edge in scenarios requiring precise subject tracking, particularly for moving subjects, thanks to its specialized eye detection feature.
Design and Portability
Portability is a strong selling point for both lenses, but they cater to slightly different needs. The Canon RF75-300mm lens is noted for its compact and lightweight design, making it easy to carry without compromising on performance. Weighing in at a comparable weight to a 500ml water bottle, it’s convenient for photographers who are often on the move. The OM SYSTEM Olympus lens also emphasizes a portable design, making it a great option for everyday shooting. Both lenses are designed for ease of use, but the Canon's longer reach may make it preferable for those looking to cover greater distances without additional weight.
Compatibility
The Canon RF75-300mm lens is exclusively compatible with Canon EOS R series cameras, such as the R100, R50, R10, R7, R8, R6, and R5. This limited compatibility means that prospective buyers need to own or plan to invest in a Canon mirrorless camera to use this lens effectively. On the other hand, the OM SYSTEM Olympus lens is designed for Micro Four Thirds system cameras, which are widely compatible with both Olympus and Panasonic models. This broader compatibility makes the Olympus lens accessible to a wider range of photographers, especially those who already own Micro Four Thirds equipment.
Which should you buy?
Choosing between the Canon RF75-300mm F4-5.6 Zoom Lens and the OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R ultimately depends on your photographic needs and budget. If you require a longer zoom range and advanced autofocus features, the Canon lens may be the better choice despite its higher price of $239.00. However, if you're looking for a more affordable option that still offers solid performance and portability at $175.99, the Olympus lens provides a compelling alternative. Consider your camera system compatibility and specific photography requirements to make the best decision for your needs.

