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OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds vs Sony a6700 Alpha APS-C Mirrorless Camera

Updated August 2026 — OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds wins on build quality, Sony a6700 Alpha APS-C Mirrorless Camera wins on autofocus and image quality.

The Sony a6700 offers superior video capabilities and a bundled lens, while the Olympus OM-1 Mark II excels in durability and still photography features.

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

Durability

IP53 weather-sealed design for outdoor use

Autofocus

1,053 autofocus points for precision

Image Processing

TruePic X engine for faster processing

Why Sony a6700 Alpha APS-C Mirrorless Camera is better

Video Features

4K/120p recording for high-quality video

Resolution

26MP sensor for more detailed images

Bundled Lens

Includes 18-135mm lens kit for versatility

Overall score

OM SYSTEM Olympus OM-1 Mark II Micro Four Thirds
85
Sony a6700 Alpha APS-C Mirrorless Camera
90

Specifications

SpecOM SYSTEM Olympus OM-1 Mark II Micro Four ThirdsSony a6700 Alpha APS-C Mirrorless Camera
Sensor TypeBSI StackedExmor R
Max ISO2560032000
Video Resolution4K4K
Image Stabilization5-axis5-axis
TouchscreenNoYes

Dimension comparison

OM SYSTEM Olympus OM-1 Mark II Micro Four ThirdsSony a6700 Alpha APS-C Mirrorless Camera

Overview of the Cameras

The OM SYSTEM Olympus OM-1 Mark II is priced at $1999.99, while the Sony a6700 Alpha comes in at $1898.00, making it about 5% cheaper than the Olympus model. Both cameras cater to photography enthusiasts but target different aspects of the user experience with their features and design philosophies.

The Olympus OM-1 Mark II is designed for outdoor photography, emphasizing durability and advanced computational photography capabilities. In contrast, the Sony a6700 focuses on versatility and advanced video features, appealing to both photographers and videographers. Understanding these distinctions helps potential buyers choose based on their specific needs.

Image Quality

In terms of image quality, the Sony a6700 features a 26MP APS-C format Exmor R back-illuminated CMOS sensor, which is superior to the 20MP BSI Stacked sensor in the Olympus OM-1 Mark II. This gives the a6700 an edge in resolution, particularly for large prints or cropping. The Olympus offers impressive low noise performance and is designed for high-resolution outputs, but the extra megapixels in the Sony create more detailed images, especially in challenging lighting conditions.

Both cameras feature advanced image processing systems, with the Olympus utilizing the TruePic X engine that provides faster processing power, while the Sony employs BIONZ XR technology for exceptional image quality. The differences in sensor size and resolution will influence users depending on whether still photography or video versatility is their primary concern.

Autofocus Performance

The autofocus capabilities of these two cameras showcase their unique strengths. The OM SYSTEM Olympus OM-1 Mark II offers 1,053 autofocus points with all cross-type focusing, ensuring high precision in various conditions. This extensive AF system is particularly beneficial for fast-moving subjects in outdoor settings, such as wildlife photography.

On the other hand, the Sony a6700 boasts 759 phase detection AF points with 93% coverage, complemented by AI-based real-time tracking. This advanced tracking technology makes it easier for the a6700 to maintain focus on subjects, especially in dynamic situations like sports or action photography. While both cameras excel in autofocus, the choice will depend on whether the user prioritizes a higher number of AF points or advanced tracking capabilities.

Video Capabilities

The Sony a6700 stands out with its robust video features, offering 4K/60p recording and high frame rate options like 4K/120p. This makes it ideal for videographers looking for cinematic quality in their footage. The inclusion of advanced features such as S-Log3 gamma curve and AI-based tracking further enhances video performance.

In comparison, the Olympus OM-1 Mark II is primarily focused on still photography with notable computational features. Although it offers video capabilities, the Sony's extensive options for recording formats and frame rates make it the better choice for users who prioritize video production. Thus, if video quality and features are your main concern, the a6700 is the clear winner.

Build Quality and Durability

The OM SYSTEM Olympus OM-1 Mark II is built with an IP53 rating, ensuring it is dustproof, splashproof, and freeze-proof down to -10℃. This weather-sealed design makes it particularly suitable for outdoor photographers who work in challenging environments and need reliable equipment.

While the Sony a6700 is also well-constructed, it does not have the same level of weather sealing as the Olympus. Photographers who often shoot in adverse weather conditions will appreciate the ruggedness of the OM-1 Mark II. Therefore, for those prioritizing durability and outdoor performance, the Olympus model is the better option.

Usability and User Interface

The user experience is another critical factor to consider. The OM SYSTEM Olympus OM-1 Mark II is designed with tactile usability in mind, making it user-friendly for both beginners and experienced photographers. Its computational photography functions, such as Handheld High Res Shot and Live ND, provide versatility in various shooting scenarios.

Conversely, the Sony a6700 features a vari-angle touchscreen LCD monitor, offering enhanced shooting flexibility, especially for vlogging or creative angles. Its electronic viewfinder is high-performance, making it easier to compose shots in bright conditions. Users who value intuitive interfaces and flexible shooting options may prefer the a6700 for its design.

Lens Options and Bundles

The Sony a6700 comes as a bundle with an 18-135mm lens kit, which adds value for those looking to start shooting right away. This versatility in lens options means users can tackle a variety of subjects without the immediate need to invest in additional lenses.

On the other hand, the OM SYSTEM Olympus OM-1 Mark II does not come with a lens included in the listed price. This could imply additional costs for buyers who may need to purchase lenses separately. For users who want an all-in-one package, the bundled offerings of the a6700 make it a more attractive option.

Which should you buy?

Choosing between the OM SYSTEM Olympus OM-1 Mark II and the Sony a6700 ultimately depends on your photography needs. If you are an outdoor enthusiast seeking durability and advanced still photography features, the Olympus OM-1 Mark II may be the better fit, despite its higher price point of $1999.99. However, if you are looking for a versatile camera that excels in both photography and video, offers a lower price of $1898.00, and comes bundled with a lens, the Sony a6700 is likely the superior choice. Consider your shooting preferences and environment to make the best decision for your photography journey.