OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds vs Sony a7 V Mirrorless Camera with 28-
Updated August 2026 — OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds wins on weight and build, Sony a7 V Mirrorless Camera with 28- wins on video and resolution.
The Sony a7 V offers superior image quality and video capabilities, making it the better choice for versatile photographers and videographers.
Why OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds is better
Price
OM-1 Mark II is $1,098.01 cheaper
Weight
OM-1 Mark II is lighter, making it easier to carry
Weather Sealing
OM-1 Mark II is designed for extreme outdoor conditions
Why Sony a7 V Mirrorless Camera with 28- is better
Resolution
Sony a7 V has a 33MP sensor vs 20MP
Autofocus
Sony a7 V features advanced AI autofocus
Video Features
Sony a7 V supports 7K-oversampled 4K recording
Overall score
Specifications
| Spec | OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds | Sony a7 V Mirrorless Camera with 28- |
|---|---|---|
| Sensor | 20MP BSI | 33MP Exmor RS |
| Processor | TruePic X | BIONZ XR2 |
| Continuous Shooting | Up to 10 fps | Up to 30 fps |
| Video Recording | 4K | 7K-oversampled 4K |
| Focus Points | 1,053 | 759 |
Dimension comparison
Overview of the OM SYSTEM Olympus OM-1 Mark II
The OM SYSTEM Olympus OM-1 Mark II is priced at $1,999.99, making it about 35% cheaper than the Sony a7 V, which retails for $3,098.00. This Micro Four Thirds system camera is designed to excel in outdoor photography, boasting a rugged, weather-sealed design that is dustproof, splashproof, and freeze-proof to temperatures as low as -10℃.
The Olympus OM-1 Mark II features a 20MP BSI stacked sensor and a powerful TruePic X engine, which provides up to three times faster processing power. With 1,053 focus points that are all cross-type, it offers high-precision focusing capabilities. The camera’s computational photography functions, including Handheld High Res Shot and HDR shooting, make it a versatile choice for capturing nature’s wonders.
Overview of the Sony a7 V
The Sony a7 V, on the other hand, is a full-frame mirrorless camera with a price tag of $3,098.00. This camera is designed for both photography and hybrid creators, making it an excellent choice for those looking to capture high-quality video alongside still images. It comes bundled with a 28-70mm lens and includes additional accessories like a 64GB memory card and a camera bag.
Equipped with a 33MP partially stacked Exmor RS sensor and the advanced BIONZ XR2 processor, the a7 V delivers impressive performance with blackout-free continuous shooting at up to 30 frames per second. Its autofocus system features 759 phase-detection points, providing accurate subject tracking for fast-moving subjects, which is particularly useful in dynamic shooting environments.
Image Quality Comparison
In terms of image quality, the Sony a7 V has a distinct edge thanks to its higher 33MP resolution compared to the 20MP of the Olympus OM-1 Mark II. This translates to greater detail and larger prints without loss of quality, making it ideal for professional photographers and hybrid video creators.
The Olympus camera, while lower in resolution, still offers excellent low noise performance due to its BSI stacked sensor. Its computational photography functions, such as Handheld High Res Shot, provide unique capabilities that can help in capturing stunning images even in challenging conditions. However, the a7 V's advanced sensor technology and processing power give it a clearer advantage in a variety of lighting situations.
Autofocus and Performance
When it comes to autofocus and overall performance, the Sony a7 V stands out with its advanced AI processing unit that enhances subject recognition and tracking. This model features 759 autofocus points covering approximately 94% of the frame, allowing for precise focus on moving subjects, whether they are humans or wildlife.
In contrast, the Olympus OM-1 Mark II, while also equipped with a highly capable autofocus system, offers 1,053 focus points that are all cross-type. This is effective for still photography and certain action scenarios, but it may not match the real-time tracking capabilities of the a7 V in fast-paced environments. Overall, if rapid subject tracking is a priority, the Sony a7 V is likely the better choice.
Video Capabilities
The video capabilities of the Sony a7 V are significantly superior, supporting professional-level recording features including 7K-oversampled 4K at up to 60p and high-speed 4K 120p for slow-motion capture. This makes it a top choice for videographers looking for high-quality footage without the need for extensive post-production work.
The Olympus OM-1 Mark II, while capable of recording video, is primarily focused on still photography and outdoor use, lacking the extensive video features found in the Sony model. For creators who prioritize video recording along with photography, the a7 V’s advanced features, such as Dynamic Active stabilization and S-Log3 support, make it the more appealing option.
Design and Usability
Design and usability are critical factors in choosing a camera. The OM SYSTEM Olympus OM-1 Mark II is compact and designed for outdoor use, with a weather-sealed body that can withstand harsh conditions. This makes it particularly suitable for nature photographers who need a reliable camera in unpredictable environments.
On the other hand, the Sony a7 V, while slightly bulkier, offers a well-thought-out ergonomic design that enhances the shooting experience. Its layout allows easy access to controls and settings, which can be crucial during fast-paced shooting scenarios. Both cameras cater to different user needs, with the Olympus focusing more on rugged outdoor capability and the Sony emphasizing versatility for various shooting styles.
Price Comparison
At $1,999.99, the Olympus OM-1 Mark II is approximately $1,098.01 less expensive than the Sony a7 V, which is priced at $3,098.00. This price difference of about 35% could significantly influence decision-making for budget-conscious photographers. The OM-1 Mark II offers great value for those primarily focused on outdoor photography without the need for extensive video capabilities.
However, for users who require high-resolution images, advanced video features, and superior autofocus performance, the investment in the Sony a7 V may be justified despite its higher price. Ultimately, the choice between the two will depend largely on specific needs and priorities.
Which should you buy?
Choosing between the OM SYSTEM Olympus OM-1 Mark II and the Sony a7 V boils down to your specific photography and videography needs. If you are looking for a versatile, weather-sealed camera that excels in outdoor conditions, the Olympus OM-1 Mark II is a compelling choice at $1,999.99. However, if you prioritize high-resolution images, superior autofocus, and advanced video capabilities, the Sony a7 V at $3,098.00 may be worth the extra investment. Each camera offers unique strengths, so consider what features matter most to you before making your decision.

