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OM SYSTEM Olympus M.Zuiko Digital 40- vs Tamron 17-

Updated July 2026 — OM SYSTEM Olympus M.Zuiko Digital 40- wins on focal length and max aperture, Tamron 17- wins on price and weight.

The Tamron lens offers superior versatility and low-light performance, making it a better choice for serious photographers.

Why OM SYSTEM Olympus M.Zuiko Digital 40- is better

Price

OM SYSTEM lens is significantly cheaper.

Portability

Designed for easy carrying.

Telephoto Range

Better for portrait and wildlife photography.

Why Tamron 17- is better

Aperture

Constant F2.8 for low-light performance.

Versatility

Wider focal length range.

Build Quality

Moisture-resistant construction.

Overall score

OM SYSTEM Olympus M.Zuiko Digital 40-
70
Tamron 17-
85

Specifications

SpecOM SYSTEM Olympus M.Zuiko Digital 40-Tamron 17-
Focal Length40-150mm17-70mm
Max ApertureF4.0-5.6F2.8
Zoom TypeTelephotoStandard
Weight300g500g
BuildPortableMoisture-resistant

Dimension comparison

OM SYSTEM Olympus M.Zuiko Digital 40-Tamron 17-

Overview of the Lenses

When comparing the OM SYSTEM Olympus M.Zuiko Digital 40-150mm F4.0-5.6 R Silver and the Tamron 17-70mm f/2.8 Di III-A VC RXD, the key difference lies in their focal ranges and intended use. The Olympus lens features a longer focal length, making it suitable for capturing distant subjects, while the Tamron lens offers a wider aperture and versatility for everyday photography.

The OM SYSTEM is priced at $175.99, while the Tamron lens is significantly higher at $599.00. This price difference of about 240% reflects their distinct target markets and functionalities.

Focal Length and Zoom Capabilities

The focal length of a lens is crucial in determining its photographic applications. The OM SYSTEM Olympus lens has a focal length of 40-150mm, providing a 3.75x zoom ratio, which is advantageous for portrait and wildlife photography. Its angle of view ranges from 30 to 8.2 degrees, allowing for versatile framing options.

In contrast, the Tamron lens features a 17-70mm focal length, translating to a 4.1x zoom ratio. This makes it ideal for a variety of shooting scenarios, from landscapes to close-up portraits. The broader range and flexibility of the Tamron lens cater to photographers seeking a reliable all-rounder.

Aperture and Low-Light Performance

Aperture plays a significant role in image quality, especially in low-light conditions. The OM SYSTEM Olympus lens has a maximum aperture of F4.0-5.6, which may limit its performance in dimly lit environments. While it is functional for outdoor daylight shooting, its capabilities may be compromised in darker settings.

Conversely, the Tamron lens boasts a constant maximum aperture of F2.8 across its focal range. This feature enhances its low-light performance, allowing for better subject isolation and faster shutter speeds. Photographers who frequently shoot in challenging lighting conditions would benefit from the Tamron's superior aperture.

Build Quality and Features

Build quality and additional features can significantly influence a photographer's experience. The OM SYSTEM Olympus lens is designed with portability in mind, making it easy to carry during outdoor shoots. However, it lacks some advanced features found in more modern lenses.

On the other hand, the Tamron lens includes moisture-resistant construction and fluorine coating, enhancing its durability and usability in various weather conditions. Furthermore, it incorporates advanced features like Vibration Compensation (VC) and AI technology for video shooting, which sets it apart in terms of functionality and usability.

Compatibility with Camera Systems

Compatibility is a crucial factor when choosing a lens. The OM SYSTEM Olympus lens is designed specifically for Micro Four Thirds system cameras, making it a perfect match for Olympus and Panasonic models. This specialized design ensures optimal performance with these camera systems.

The Tamron lens, however, is engineered for Sony E APS-C mirrorless cameras, making it compatible with a different user base. This targeting allows Tamron to leverage the advanced features of Sony cameras, including Fast Hybrid AF and Eye AF, enhancing the overall shooting experience.

Price Comparison

Price is often a decisive factor in any purchase decision. The OM SYSTEM Olympus lens is currently available for $175.99, making it a more budget-friendly option for those seeking a reliable telephoto lens. It offers great value for those who primarily engage in portrait or wildlife photography without breaking the bank.

In contrast, the Tamron lens is priced at $599.00. This higher price point reflects its advanced features and versatility. For photographers who prioritize performance and are willing to invest more for superior quality and functionality, the Tamron lens may justify its cost despite the steep price difference.

Target Audience

The target audience for each lens varies significantly based on their features and pricing. The OM SYSTEM Olympus lens appeals primarily to amateur photographers or enthusiasts looking for a cost-effective solution for telephoto needs. Its portability and decent optical performance make it suitable for casual shooting.

On the other hand, the Tamron lens targets more serious photographers and videographers who require versatility and high image quality for professional work. Its advanced features, such as moisture resistance and a constant F2.8 aperture, cater to those who are willing to invest in a lens that can handle various challenging shooting conditions.

Which should you buy?

In conclusion, the choice between the OM SYSTEM Olympus lens and the Tamron 17-70mm lens ultimately hinges on your specific needs and budget. If you're looking for an affordable telephoto option that excels in portrait and wildlife photography, the OM SYSTEM lens at $175.99 is a great choice. However, if you're a serious photographer seeking versatility, low-light performance, and advanced features, the Tamron lens, despite its higher price of $599.00, offers significant advantages that may justify the investment. Each lens serves its purpose well, making the decision dependent on your photographic style and requirements.