Sony a5100 16- vs Sony Alpha a6400 Mirrorless Camera: Compact APS-C
Updated August 2026 — Sony a5100 16- wins on value, Sony Alpha a6400 Mirrorless Camera: Compact APS-C wins on screen and build.
The Sony Alpha a6400 offers superior features and performance, making it the better choice for advanced users. However, the a5100 provides excellent value for casual photographers.
Why Sony a5100 16- is better
Price
The a5100 is cheaper by about $58.
Weight
The a5100 is lighter and more compact.
Simplicity
The a5100 is more user-friendly for beginners.
Why Sony Alpha a6400 Mirrorless Camera: Compact APS-C is better
Autofocus
The a6400 has superior autofocus capabilities.
Video
The a6400 supports 4K video recording.
Sensor
The a6400 has a more advanced sensor for low-light performance.
Overall score
Specifications
| Spec | Sony a5100 16- | Sony Alpha a6400 Mirrorless Camera: Compact APS-C |
|---|---|---|
| Sensor | 24MP APS-C | 20.1MP Exmor RS |
| Autofocus | 179 points | 850 points |
| Video | Full HD | 4K |
| Continuous Shooting | 6 fps | 11 fps |
| Connectivity | Wi-Fi, NFC | Wi-Fi, enhanced |
Dimension comparison
Introduction to the Sony a5100 and Sony Alpha a6400
When comparing the Sony a5100 and the Sony Alpha a6400, it's essential to recognize that both cameras cater to different needs and preferences. The a5100 is priced at $777.48, while the a6400 costs $835.90, making the a5100 about 7% cheaper. While both models boast impressive features, they differ significantly in specifications and target audiences.
Image Quality and Sensor Capabilities
The image quality between these two models highlights the differences in their sensor technology. The Sony a5100 features a 24MP APS-C sensor, which delivers high-resolution images suitable for casual photography. In contrast, the Sony Alpha a6400 boasts a 20.1MP stacked back-illuminated Exmor RS CMOS sensor, which is designed to capture images with enhanced detail and low-light performance. This advanced sensor technology allows the a6400 to produce clearer, more vibrant images, particularly in challenging lighting conditions.
Autofocus Performance
Autofocus is a crucial aspect for photographers, especially when capturing fast-moving subjects. The Sony a5100 offers ultra-fast autofocus with 179 AF points and continuous shooting at 6 frames per second. Meanwhile, the Sony Alpha a6400 significantly enhances this feature with its 425 phase detection and 425 contrast detection points, covering over 84% of the sensor. This advanced autofocus system allows the a6400 to excel in subject tracking, making it a better choice for action shots and dynamic scenes.
Video Recording Capabilities
When it comes to video recording, the two cameras also display notable differences. The Sony a5100 can record Full HD 1080p videos at frame rates of 24 and 60 frames per second. On the other hand, the Sony Alpha a6400 takes video capabilities a step further with 4K video recording, providing higher resolution and more detail. The a6400 also supports multiple movie functions, including time-lapse and slow-motion, catering to videographers looking for versatility in their projects.
Design and Usability
The design and usability of these cameras are tailored to different user experiences. The Sony a5100 features a compact and lightweight design with a 3-inch flip-up LCD screen, making it ideal for everyday use and casual shooting. In contrast, the Sony Alpha a6400 maintains a similar compactness but adds a tiltable LCD screen, making it more versatile for vlogging and professional film recording. This added flexibility is beneficial for content creators seeking to maximize their shooting angles.
Connectivity and Sharing Features
In today's digital age, connectivity is crucial for photographers and videographers. The Sony a5100 offers instant sharing via Wi-Fi and NFC, allowing for quick uploads to social media or cloud storage. The a6400, while also featuring Wi-Fi connectivity, enhances this experience with additional functionalities that streamline the process of sharing high-quality images and videos. This makes the a6400 a better option for those who prioritize seamless connectivity.
Price Comparison and Value for Money
In terms of pricing, the Sony a5100 is currently listed at $777.48, whereas the Sony Alpha a6400 is slightly more expensive at $835.90. The price difference amounts to about $58.42, which could be justified by the a6400’s superior features and capabilities. However, for those who are more budget-conscious or require a simpler camera for casual use, the a5100’s price point and features may provide better value for money.
Which should you buy?
Choosing between the Sony a5100 and the Sony Alpha a6400 ultimately boils down to your specific needs and preferences. If you are looking for an affordable, user-friendly camera that excels in image quality for everyday photography, the Sony a5100 would be an excellent choice. However, if advanced autofocus, 4K video capabilities, and enhanced connectivity are your priorities, the Sony Alpha a6400, despite its higher price, offers significant advantages that may justify the investment.

