Canon EF vs OM SYSTEM Olympus M.Zuiko Digital 40-
Updated July 2026 — Canon EF wins on aperture and weight, OM SYSTEM Olympus M.Zuiko Digital 40- wins on zoom range and focal length.
The Canon EF 50mm f/1.8 STM Lens excels in low-light performance and image quality, while the OM SYSTEM Olympus 40-150mm offers versatility with its zoom range. Choose based on your photography needs.
Why Canon EF is better
Low Light
Canon lens has a maximum aperture of f/1.8.
Image Quality
Canon lens provides sharper images with better color balance.
Portability
Canon lens is lighter at 5.6 oz.
Why OM SYSTEM Olympus M.Zuiko Digital 40- is better
Versatility
Olympus lens has a zoom range of 40-150mm.
Zoom Factor
Olympus lens offers a 3.75x zoom.
General Use
Olympus lens is suitable for a wider range of photography styles.
Overall score
Specifications
| Spec | Canon EF | OM SYSTEM Olympus M.Zuiko Digital 40- |
|---|---|---|
| Focal Length | 50mm | 40-150mm |
| Max Aperture | f/1.8 | f/4-5.6 |
| Weight | 5.6 oz | 7.1 oz |
| Autofocus | STM | MSC |
| Image Quality | High | Medium |
Dimension comparison
Overview of the Canon EF 50mm f/1.8 STM Lens and OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R
The Canon EF 50mm f/1.8 STM Lens is priced at $169.00, while the OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R is available for $175.99. This means the Canon lens is about 4% cheaper than the Olympus lens. Both lenses cater to different photography needs, with the Canon being a prime lens ideal for portraits and low-light conditions, and the Olympus offering a versatile zoom range suitable for various shooting scenarios.
Design and Build Quality
The Canon EF 50mm f/1.8 STM Lens is compact and lightweight, making it an excellent walk-around lens. Weighing just 5.6 oz, it is designed for photographers seeking portability without sacrificing performance. In contrast, the OM SYSTEM Olympus M.Zuiko Digital 40-150mm features a portable design but with a zoom range that adds versatility. While both lenses have robust designs, the Canon's smaller size may appeal more to users looking for a discreet lens for everyday use.
Focal Length and Aperture
The Canon EF 50mm lens has a fixed focal length of 50mm and a maximum aperture of f/1.8, which excels in low-light conditions and provides beautiful background blur. On the other hand, the Olympus 40-150mm lens offers a focal length range of 40-150mm with a maximum aperture of f/4.0-5.6. This means that while the Olympus lens is versatile for various subjects, it does not perform as well in low-light settings compared to the Canon lens. The Canon's wide aperture provides over 8 times more light than standard zoom lenses, enhancing its appeal for nighttime photography.
Autofocus Performance
The Canon EF 50mm f/1.8 STM Lens employs a Stepping Motor (STM) for near-silent and continuous autofocus, which is particularly beneficial for video recording. It features a close focusing distance of 1.15 feet, making it effective for detail-oriented shots. The OM SYSTEM Olympus lens uses High-Speed Imager AF (MSC) for quick focusing as well. However, the Canon's STM technology is renowned for its smooth performance in both stills and video, making it a more suitable choice for filmmakers and photographers who frequently shoot in quiet environments.
Image Quality
The Canon lens is celebrated for its sharpness and color balance, thanks to its six-element construction and updated lens coatings that minimize ghosting and flare. This results in high-quality images, especially in challenging lighting conditions. The OM SYSTEM Olympus lens, while versatile, may not achieve the same level of sharpness at its maximum zoom compared to the Canon lens at its fixed focal length. The effective 50mm focal length of the Canon allows for a perspective that closely resembles the human eye, making it ideal for portraiture, while the Olympus's zoom range is more suited for capturing subjects at various distances.
Versatility in Photography
The versatility of the Olympus 40-150mm lens is evident in its zoom capabilities, allowing photographers to shoot everything from wide-angle landscapes to close-up portraits. With a zoom factor of 3.75x, it provides a broader range of composition options compared to the fixed focal length of the Canon lens. However, this versatility comes at the cost of maximum aperture, which is less capable in low light. For those prioritizing versatility and the ability to adapt to different shooting scenarios, the Olympus lens offers clear advantages.
Target Audience
The Canon EF 50mm f/1.8 STM Lens is perfect for enthusiasts and professionals focused on portrait and low-light photography. Its affordability and performance make it a popular choice for those looking to upgrade from kit lenses. Conversely, the OM SYSTEM Olympus lens caters to a wider audience looking for a general-purpose zoom lens that is easy to carry. It appeals to both novice and intermediate photographers seeking to explore different types of photography without committing to multiple lenses.
Which should you buy?
Ultimately, the choice between the Canon EF 50mm f/1.8 STM Lens and the OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R boils down to individual needs. If your focus is on portrait photography and shooting in low light, the Canon lens, priced at $169.00, offers superior performance and image quality. However, if you seek flexibility and a versatile zoom range for various photography styles, the Olympus lens at $175.99 could be the better choice. Each lens has its strengths, catering to different types of photographers and their respective styles.

