Canon EOS R5 Mark II Body vs Sony Alpha a6400 Mirrorless Camera: Compact APS-C
Updated August 2026 — Canon EOS R5 Mark II Body wins on image quality and build, Sony Alpha a6400 Mirrorless Camera: Compact APS-C wins on price and portability.
The Canon EOS R5 Mark II is the superior choice for professionals seeking top-tier image quality and advanced features, while the Sony Alpha a6400 offers excellent value and portability for casual users and vloggers.
Why Canon EOS R5 Mark II Body is better
Sensor
45MP full-frame back-illuminated stacked CMOS sensor vs 20.1MP APS-C sensor
Autofocus
Advanced eye control focus and 30 fps shooting vs 425 phase/contrast points and 11 fps
Video
Simultaneous video and still capture vs 4K video with time-lapse and slow motion
Why Sony Alpha a6400 Mirrorless Camera: Compact APS-C is better
Price
$835.90 vs $3,898.95
Portability
Compact and lightweight design vs professional robust body
User Interface
Tiltable LCD screen ideal for vlogging vs advanced pro-oriented interface
Overall score
Specifications
| Spec | Canon EOS R5 Mark II Body | Sony Alpha a6400 Mirrorless Camera: Compact APS-C |
|---|---|---|
| Sensor Resolution | 45MP full-frame | 20.1MP APS-C |
| Max FPS | 30 fps electronic shutter | 11 fps continuous |
| Video Features | Simultaneous video & stills | 4K, time-lapse, slow-mo |
| Price | $3,898.95 | $835.90 |
| Build Quality | Professional robust body | Compact lightweight |
| Autofocus Points | Eye control, advanced tracking | 425 phase + contrast points |
| Screen | High-res EVF | Tiltable LCD |
Dimension comparison
Introduction to the Canon EOS R5 Mark II and Sony Alpha a6400
In the world of mirrorless cameras, the Canon EOS R5 Mark II and the Sony Alpha a6400 stand out as exceptional choices tailored for different types of photographers. The Canon EOS R5 Mark II is priced at $3,898.95, while the Sony Alpha a6400 comes in at a significantly lower price of $835.90, making it about 78% cheaper than its Canon counterpart. This contrast in pricing reflects a divergence in features, target audience, and overall capabilities.
Sensor Technology and Image Quality
The Canon EOS R5 Mark II features a completely new full-frame back-illuminated stacked CMOS sensor with a resolution of 45MP, while the Sony Alpha a6400 is equipped with a 20.1MP stacked back-illuminated 1" Exmor RS CMOS sensor. The higher resolution of the Canon offers more detail and is ideal for large prints or cropping in post-production. In contrast, the Sony boasts a solid 20.1MP, which is more than sufficient for most casual photography and vlogging needs. The advanced sensor technology of both cameras ensures excellent image quality, but the Canon clearly leads in terms of sheer resolution and low-light performance.
Autofocus and Shooting Speed
When it comes to autofocus and shooting speed, the Canon EOS R5 Mark II excels with its new focus system upgrades, including eye control focus and the ability to maintain focus on moving subjects, even when briefly obscured. It can achieve up to 30 frames per second (fps) with its electronic shutter. The Sony Alpha a6400 also offers impressive performance, with 425 phase detection and 425 contrast detection points, allowing for fast and accurate autofocus. It supports continuous shooting at up to 11 fps. While both cameras are capable of capturing fast-moving subjects, the Canon's superior fps and advanced tracking technology make it the better choice for action photography.
Video Capabilities
The Canon EOS R5 Mark II offers enhanced video capabilities, allowing users to capture video and stills simultaneously without interruption. This feature is beneficial for content creators who want to streamline their workflow. The Sony Alpha a6400 supports 4K video and includes multiple movie functions, like time-lapse and slow-motion capabilities. While both cameras can capture high-quality video, the Canon's ability to combine stills and video seamlessly gives it an edge for professional videographers and hybrid shooters.
Build Quality and Design
In terms of build quality, the Canon EOS R5 Mark II is designed for professionals, featuring a robust body that can withstand various shooting conditions. Its ergonomic design enhances usability during long shoots. The Sony Alpha a6400, being more compact and lightweight, is ideal for travel and everyday use. While both cameras have their merits in design, the Canon's build quality may appeal more to those who prioritize durability and a professional feel.
User Experience and Interface
The user experience is another area where both cameras differ significantly. The Canon EOS R5 Mark II offers a more advanced interface with features tailored for pro photographers, including customizable settings and a high-resolution electronic viewfinder. In contrast, the Sony Alpha a6400 comes with a tiltable LCD screen that is particularly useful for vlogging and creative angles. Both cameras provide a good user experience, but the Canon's extensive features cater more to experienced photographers, while the Sony's simplicity may attract beginners.
Price and Value Proposition
With a price tag of $3,898.95, the Canon EOS R5 Mark II is an investment aimed at serious photographers and videographers seeking top-tier performance. The Sony Alpha a6400, at $835.90, presents a more accessible entry point for enthusiasts and casual users. Despite the considerable price difference—about $3,063.05—each camera offers value within its respective market segment. The Canon is designed for those who demand the best in performance, while the Sony caters to those who want quality without breaking the bank.
Which should you buy?
Choosing between the Canon EOS R5 Mark II and the Sony Alpha a6400 ultimately depends on your specific needs and budget. If you are a professional or a serious enthusiast who requires advanced features, exceptional image quality, and superior video capabilities, the Canon EOS R5 Mark II is the clear choice, despite its higher price. On the other hand, if you are looking for a compact, cost-effective camera that still delivers impressive performance for casual photography and vlogging, the Sony Alpha a6400 is an excellent option. Each camera serves its purpose well, making the best choice one that aligns with your photography style and financial considerations.

