OM SYSTEM Olympus M.Zuiko Digital 40- vs Viltrox
Updated July 2026 — OM SYSTEM Olympus M.Zuiko Digital 40- wins on focal length and weight, Viltrox wins on portability and build quality.
The OM SYSTEM lens offers versatility with its zoom range, while the Viltrox lens excels in low-light performance. Choose based on your specific photography needs.
Why OM SYSTEM Olympus M.Zuiko Digital 40- is better
Zoom Range
Versatile focal length of 40-150mm.
Portability
Lightweight design for travel.
Brand Reputation
Established brand in the camera lens market.
Why Viltrox is better
Low-Light Performance
Wide f/1.7 aperture for better low-light shooting.
Autofocus Technology
Quiet STM motor for video work.
Compact Design
Lightweight at 170g, ideal for everyday use.
Overall score
Specifications
| Spec | OM SYSTEM Olympus M.Zuiko Digital 40- | Viltrox |
|---|---|---|
| Max Aperture | f/4-5.6 | f/1.7 |
| Autofocus | High-Speed Imager AF | STM Motor |
| Compatibility | Micro Four Thirds | Sony E Mount |
| Image Stabilization | No | No |
| Max Magnification | 0.16 | 0.1 |
Dimension comparison
Overview of the Lenses
The OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R Silver lens is designed for Micro Four Thirds system cameras, while the Viltrox 25mm F1.7 E is tailored for Sony E mirrorless cameras. The Olympus lens offers versatility with a zoom range, while the Viltrox lens excels in low-light conditions due to its wide aperture.
Both lenses are priced closely, with the Olympus lens at $175.99 and the Viltrox lens at $176.00, making them similarly positioned in the market. This slight difference of just one cent may not significantly impact buying decisions, but it reflects their competitive nature.
Design and Build Quality
The OM SYSTEM lens features a portable design, ideal for photographers seeking mobility. It provides a focal length of 40-150mm, allowing for a range of shooting scenarios from portraits to landscapes. Conversely, the Viltrox lens is compact, weighing only 170g, making it a practical choice for travel and everyday use.
While both lenses are designed for ease of use, the Olympus lens's zoom capability offers more versatility, whereas the Viltrox's lightweight construction is a bonus for those prioritizing portability. Each design serves its intended purpose effectively, appealing to different photography styles.
Aperture and Low-Light Performance
The Viltrox 25mm F1.7 E stands out with its maximum aperture of f/1.7, making it particularly advantageous in low-light situations. This capability allows for greater control over depth of field, which is essential for creative photography. The OM SYSTEM lens, on the other hand, has a maximum aperture of f/4-5.6, which limits its performance in dimly lit environments.
This difference means that photographers who often shoot in low light may prefer the Viltrox lens for its superior aperture. The f/1.7 aperture of the Viltrox lends itself to sharper images in challenging lighting, which is a critical consideration for many users.
Autofocus Technology
Both lenses incorporate advanced autofocus technologies, but they serve their respective markets differently. The OM SYSTEM lens utilizes High-Speed Imager AF (MSC) for swift focusing, which is crucial for capturing fast-moving subjects. In contrast, the Viltrox lens features an STM stepper motor that provides a quiet autofocus experience, beneficial for both photography and videography.
The choice here largely depends on the user's needs. If capturing fast action is the goal, the OM SYSTEM lens may be more appropriate. However, for those who prioritize silent operation, especially in video work, the Viltrox lens shines in this area.
Compatibility and Use Cases
The OM SYSTEM lens is optimized for Micro Four Thirds cameras, making it an excellent option for Olympus and Panasonic users. Its versatility in focal length makes it suitable for various situations, from wildlife photography to casual snaps. The Viltrox lens, however, is designed specifically for Sony E mount cameras, including popular models like the ZV-E10 II and a6600.
When selecting a lens, compatibility with your camera system is paramount. Users of Micro Four Thirds cameras will find the OM SYSTEM lens perfectly compatible, while Sony E mount users will benefit from the specialized features of the Viltrox lens.
Price and Value Proposition
Both lenses are closely priced, with the OM SYSTEM lens at $175.99 and the Viltrox lens at $176.00. This negligible price difference of one cent indicates that both products are targeting similar market segments. Despite their similar pricing, their value propositions vary significantly based on features and intended use.
When considering value, potential buyers should weigh the specific advantages of each lens against their own shooting needs. The Olympus lens offers a zoom range that can be more versatile for certain scenarios, while the Viltrox provides superior low-light capabilities.
User Experience and Reviews
User feedback on both lenses indicates satisfaction, though they cater to different preferences. The OM SYSTEM lens is praised for its zoom functionality and portability, making it a favorite among travelers and outdoor photographers. Meanwhile, the Viltrox lens receives accolades for its low-light performance and quiet autofocus, particularly among videographers and those who shoot in varied lighting conditions.
Customer experiences can play a significant role in the decision-making process. Users seeking a flexible zoom lens may lean towards the OM SYSTEM, while those prioritizing low-light performance might find the Viltrox more appealing.
Which should you buy?
Choosing between the OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R Silver lens and the Viltrox 25mm F1.7 E ultimately depends on your specific photography needs. If you frequently shoot in low-light conditions or require a lens for video work with silent autofocus, the Viltrox lens is the superior option due to its f/1.7 aperture and STM motor. However, if you desire versatility with a zoom lens for various shooting situations, the OM SYSTEM lens is an excellent choice that provides good portability and a useful focal range. Both lenses offer excellent value in their respective categories, making them solid investments for their target users.

