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OM SYSTEM Olympus OM-3 Silver Micro Four Thirds vs Sony a7 V Mirrorless Camera with 28-

Updated August 2026 — OM SYSTEM Olympus OM-3 Silver Micro Four Thirds wins on weight and build, Sony a7 V Mirrorless Camera with 28- wins on video and autofocus.

The Sony a7 V offers superior image quality and advanced features, making it the better choice for professionals, while the OM-3 is a solid, budget-friendly option.

Why OM SYSTEM Olympus OM-3 Silver Micro Four Thirds is better

Price

OM-3 is approximately 45% cheaper than a7 V.

Build Quality

OM-3 has a vintage-styled, premium metal body.

Weight

OM-3 is lighter, making it more portable.

Why Sony a7 V Mirrorless Camera with 28- is better

Image Quality

a7 V has a 33 MP sensor compared to OM-3's 20 MP.

Autofocus

a7 V features advanced AI autofocus capabilities.

Video Features

a7 V supports 7K-oversampled 4K recording.

Overall score

OM SYSTEM Olympus OM-3 Silver Micro Four Thirds
75
Sony a7 V Mirrorless Camera with 28-
90

Specifications

SpecOM SYSTEM Olympus OM-3 Silver Micro Four ThirdsSony a7 V Mirrorless Camera with 28-
Sensor MP20 MP33 MP
ProcessorTruePic XBIONZ XR2
Continuous ShootingN/A30 fps
Video RecordingN/A7K-oversampled 4K
Weather SealingIP53Weather-resistant

Dimension comparison

OM SYSTEM Olympus OM-3 Silver Micro Four ThirdsSony a7 V Mirrorless Camera with 28-

Overview of the OM SYSTEM Olympus OM-3

The OM SYSTEM Olympus OM-3 Silver Micro Four Thirds System Camera is priced at $1,699.99, making it approximately 45% cheaper than its competitor, the Sony a7 V, which retails for $3,098.00. This camera is designed for creative photographers who seek versatility and durability. With its vintage-styled, premium metal body, the OM-3 is not only aesthetically pleasing but also robust, featuring an IP53 rating that ensures it is dustproof, splashproof, and freezeproof.

The OM-3 is powered by the TruePic X Processor and boasts a 20 MP stacked BSI Live MOS sensor, which enhances image quality and performance in various lighting conditions. Additionally, it offers a 2.36m-dot OLED electronic viewfinder that provides a clear and detailed view, allowing photographers to compose their shots with precision. This camera is designed to be a reliable companion for both urban and remote shooting experiences.

Overview of the Sony a7 V

The Sony a7 V Mirrorless Camera, bundled with a 28-70mm lens, is priced at $3,098.00, making it one of the higher-end options in the mirrorless camera market. This camera features a full-frame E-mount sensor and is equipped with advanced autofocus capabilities, including 759 phase-detection AF points that cover approximately 94% of the frame. This makes it particularly well-suited for fast-paced photography and videography.

One of the standout features of the a7 V is its 33 MP partially stacked Exmor RS full-frame CMOS sensor, which offers a significant upgrade in resolution and image quality compared to the OM-3. Additionally, the a7 V allows for blackout-free continuous shooting at up to 30 frames per second, making it an excellent choice for action photography. The camera also excels in video capabilities, offering professional-level recording features, including 7K-oversampled 4K recording.

Image Quality Comparison

When it comes to image quality, the Sony a7 V has a clear advantage due to its 33 MP sensor compared to the 20 MP sensor of the OM SYSTEM Olympus OM-3. This higher resolution in the a7 V allows for more detailed images, which is especially beneficial for large prints or cropping. Moreover, the a7 V's advanced BIONZ XR2 processor enhances its performance in challenging lighting conditions and reduces rolling shutter effects, providing a smoother experience during high-speed shooting.

On the other hand, the OM-3 still delivers impressive image quality thanks to its stacked BSI sensor and TruePic X Processor. The computational photography features, such as Live ND and High Res Shot, offer unique capabilities that can enhance the creative process. While the a7 V may lead in raw resolution, the OM-3 provides tools that can help photographers achieve artistic effects that are not available on the Sony model.

Autofocus and Speed

The autofocus capabilities of the Sony a7 V are significantly superior, featuring real-time Eye AF and advanced subject recognition through its dedicated AI Processing Unit. This system allows the a7 V to track subjects with remarkable accuracy, making it ideal for wildlife and sports photography where timing is critical.

In contrast, the OM SYSTEM Olympus OM-3 does include autofocus features, but they do not match the sophistication of the a7 V's system. The OM-3's features are more suited for general photography and may not be as effective in fast-moving scenarios. The a7 V can shoot continuously at up to 30 frames per second, while the OM-3's speed capabilities are not specified, indicating that it may not compete in this area.

Video Recording Capabilities

For videographers, the Sony a7 V again outshines the OM-3. It offers 7K-oversampled 4K recording at up to 60p, along with high-speed options for slow-motion capture, making it an excellent choice for filmmakers. The advanced heat dissipation allows for extended recording times, which is crucial for longer shoots.

In contrast, the OM SYSTEM Olympus OM-3 does not have specified video recording features that can match the Sony's capabilities. While the OM-3 may handle video adequately for casual use, the a7 V provides a comprehensive suite of professional tools that cater to serious video creators.

Build and Design

The OM SYSTEM Olympus OM-3 features a vintage-styled, premium metal body that appeals to photographers who appreciate aesthetics and durability. Its design includes an IP53 rating, making it resistant to dust, splashes, and freezing temperatures, which is ideal for outdoor photography.

The Sony a7 V, while also designed with a weather-resistant body, may not have the same vintage look but offers a more modern feel. Both cameras have ergonomic designs that facilitate easy handling during extended shooting sessions. However, the choice between these styles will ultimately come down to personal preference, as they both have solid build quality.

Pricing and Value

The OM SYSTEM Olympus OM-3, at $1,699.99, is priced about 45% lower than the Sony a7 V at $3,098.00. For those who are budget-conscious but still want a capable camera, the OM-3 offers excellent value with its combination of features and rugged design.

Conversely, the Sony a7 V is geared towards professionals who require advanced features and higher performance, justifying its higher price tag. While the a7 V may be more expensive, it provides capabilities that can significantly enhance a photographer's or videographer's work, making it a worthwhile investment for serious users.

Which should you buy?

Choosing between the OM SYSTEM Olympus OM-3 and the Sony a7 V ultimately depends on your photography needs and budget. If you are looking for a more affordable option with solid performance and a rugged design, the OM-3 is an excellent choice. However, if you require advanced autofocus, superior image quality, and extensive video capabilities, the Sony a7 V justifies its higher price for those who can take full advantage of its features.