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OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds vs Sony Alpha 7R V Full-Frame Mirrorless Camera

Updated August 2026 — OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds wins on price and build, Sony Alpha 7R V Full-Frame Mirrorless Camera wins on video and sensor.

The OM SYSTEM Olympus OM-1 Mark II offers excellent value and durability for outdoor photography, while the Sony Alpha 7R V excels in resolution and video capabilities.

Why OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds is better

Price

OM-1 Mark II is $1,999.99, 17% cheaper than Alpha 7R V.

Weather Sealing

OM-1 Mark II is IP53 rated for dust and moisture.

Computational Features

OM-1 Mark II has advanced computational photography functions.

Why Sony Alpha 7R V Full-Frame Mirrorless Camera is better

Resolution

Alpha 7R V has a 61.0 MP sensor compared to 20MP.

Autofocus

Alpha 7R V features advanced AI autofocus.

Video Quality

Alpha 7R V supports 8K video recording.

Overall score

OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds
78
Sony Alpha 7R V Full-Frame Mirrorless Camera
88

Specifications

SpecOM SYSTEM Olympus OM-1 Mark II Micro Four ThirdsSony Alpha 7R V Full-Frame Mirrorless Camera
Sensor MP20MP61MP
Video 8KNoYes
Autofocus Points1,053Real-time AI
Processing EngineTruePic XBIONZ XR
Weather SealingIP53No

Dimension comparison

OM SYSTEM Olympus OM-1 Mark II Micro Four ThirdsSony Alpha 7R V Full-Frame Mirrorless Camera

Introduction to the Cameras

In the competitive world of mirrorless cameras, the OM SYSTEM Olympus OM-1 Mark II and the Sony Alpha 7R V stand out for their advanced features and capabilities. Both cameras cater to photography enthusiasts looking for high performance and versatility, but they target slightly different audiences. The Olympus OM-1 Mark II is priced at $1,999.99, making it about 17% cheaper than the Sony Alpha 7R V, which retails for $3,298.00. This price difference reflects the distinct features and technologies each camera offers.

Design and Build Quality

The OM SYSTEM Olympus OM-1 Mark II is designed with weather-sealed durability, ensuring it performs in extreme conditions such as dust, moisture, and freezing temperatures down to -10℃. This robust build quality makes it an excellent choice for outdoor photography. Conversely, the Sony Alpha 7R V is crafted for a premium feel, boasting a sleek and modern aesthetic that is appealing to many users. However, it does not emphasize weather-sealing as prominently as the Olympus model. Both cameras are well-constructed, but the OM-1 Mark II has a practical advantage for photographers working in unpredictable environments.

Sensor Technology

When it comes to sensor technology, the Sony Alpha 7R V offers a superior 61.0 MP full-frame back-illuminated Exmor R CMOS sensor, which provides exceptional detail and image quality. This high resolution is ideal for large prints and cropping flexibility. On the other hand, the OM SYSTEM Olympus OM-1 Mark II features a 20MP stacked BSI Live MOS sensor, delivering impressive low noise and fast processing capabilities. While the Olympus sensor is capable, it falls short of the Sony's resolution. Photographers needing maximum detail may gravitate towards the Alpha 7R V.

Autofocus Capabilities

The autofocus systems in both cameras are noteworthy but differ significantly in their approach. The OM SYSTEM Olympus OM-1 Mark II employs Cross Quad Pixel AF with 1,053 focus points, ensuring high-precision focusing across the frame. In contrast, the Sony Alpha 7R V introduces a next-generation autofocus system with Real-time Recognition capabilities powered by deep learning AI. This advanced system promises enhanced tracking and subject recognition, making it particularly suited for fast-moving subjects. For users prioritizing autofocus performance, the Alpha 7R V may be the better option.

Processing Power

Processing performance is another critical aspect where these cameras diverge. The OM SYSTEM Olympus OM-1 Mark II utilizes the TruePic X engine, which provides up to three times faster processing power compared to previous models. This speed enhances the camera's computational photography capabilities, including features like Handheld High Res Shot and HDR shooting. Meanwhile, the Sony Alpha 7R V features the BIONZ XR engine, which boosts overall processing speed by up to eight times. This significant improvement translates to faster shooting speeds and better video performance, including 8K video capabilities, appealing to filmmakers and high-resolution photographers alike.

Video Capabilities

For videographers, the Sony Alpha 7R V is a standout choice with its ability to record in 8K at 24p/25p and 4K at 60p. This flexibility allows content creators to capture stunning video in high resolution, which is increasingly important in today’s multimedia landscape. The OM SYSTEM Olympus OM-1 Mark II, while also capable of video recording, does not match the 8K capability of the Alpha 7R V. Instead, it focuses on enhancing the photography experience with advanced computational features. Thus, those prioritizing video quality and versatility may find the Sony camera more appealing.

Price and Value Proposition

The price difference between the two cameras is significant, with the OM SYSTEM Olympus OM-1 Mark II retailing for $1,999.99 and the Sony Alpha 7R V priced at $3,298.00. This makes the Olympus camera about 17% more affordable than the Sony model. While both offer great value for their respective features, the OM-1 Mark II is an excellent choice for photographers looking for a capable camera that can withstand harsh conditions without breaking the bank. In contrast, the Alpha 7R V justifies its higher price with advanced features aimed at professionals needing top-tier performance.

Which should you buy?

Ultimately, the decision between the OM SYSTEM Olympus OM-1 Mark II and the Sony Alpha 7R V depends on specific needs and preferences. If you're an outdoor photographer seeking a durable, weather-sealed camera with excellent computational features and a lower price point, the OM-1 Mark II is a compelling option. However, if you prioritize high-resolution imaging, advanced autofocus, and superior video capabilities, the Sony Alpha 7R V is worth the investment despite its higher cost. Each camera excels in its own right, catering to different types of photographers and videographers.