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Canon EOS R100 Mirrorless Camera with RF-S18- vs Sony Alpha a6400 Mirrorless Camera: Compact APS-C

Updated August 2026 — Canon EOS R100 Mirrorless Camera with RF-S18- wins on design, Sony Alpha a6400 Mirrorless Camera: Compact APS-C wins on autofocus and features.

The Canon EOS R100 offers great value and included accessories, while the Sony Alpha a6400 excels in advanced features and autofocus.

Why Canon EOS R100 Mirrorless Camera with RF-S18- is better

Price

Canon is $256 cheaper than Sony

Included Accessories

Canon includes a memory card and bag

Weight

Canon is lighter and more portable

Why Sony Alpha a6400 Mirrorless Camera: Compact APS-C is better

Autofocus

Sony has more autofocus points for better tracking

Video Features

Sony offers time-lapse and slow-motion capabilities

Sensor Technology

Sony's sensor provides better low-light performance

Overall score

Canon EOS R100 Mirrorless Camera with RF-S18-
78
Sony Alpha a6400 Mirrorless Camera: Compact APS-C
85

Specifications

SpecCanon EOS R100 Mirrorless Camera with RF-S18-Sony Alpha a6400 Mirrorless Camera: Compact APS-C
Image Sensor24.1MP CMOS20.1MP Exmor RS
Autofocus143 zones850 zones
Video Resolution4K4K
Continuous Shooting6.5 fps11 fps
Included LensRF-S 18-45mm16-50mm

Dimension comparison

Canon EOS R100 Mirrorless Camera with RF-S18-Sony Alpha a6400 Mirrorless Camera: Compact APS-C

Introduction to Mirrorless Cameras

When it comes to mirrorless cameras, the Canon EOS R100 and the Sony Alpha a6400 stand out as two excellent options for photographers and videographers alike. The Canon EOS R100 is priced at $579.00, making it significantly cheaper than the Sony Alpha a6400, which retails for $835.90—about 45% more expensive. Both cameras offer unique features that cater to different user needs, making this comparison essential for potential buyers.

Image Quality Comparison

In terms of image quality, the Canon EOS R100 boasts a 24.1 megapixel CMOS (APS-C) sensor, which is known for producing stunning images with natural bokeh. This makes it an excellent choice for those who prioritize image clarity and detail. In contrast, the Sony Alpha a6400 features a 20.1MP stacked back illuminated 1" Exmor RS CMOS sensor, which also delivers impressive results but sits slightly behind the Canon in megapixel count. The difference in pixel count may not be significant for casual users, but for professionals, every pixel counts.

Autofocus Performance

Autofocus capabilities are crucial for capturing sharp images, especially in dynamic settings. The Canon EOS R100 employs a Dual Pixel CMOS AF system that covers up to 143 zones, allowing for effective human face and eye detection. This advanced autofocus system is particularly advantageous for portrait photography. Meanwhile, the Sony Alpha a6400 features 425 phase and 425 contrast detection points, covering 84% of the sensor, which enhances its capability to lock onto subjects quickly and accurately. Both cameras excel, but the Canon may have a slight edge in terms of user-friendly autofocus technology.

Video Capabilities

Both cameras support 4K video recording, making them suitable for videographers. The Canon EOS R100 can record 4K video at up to 24 frames per second, along with Full HD at 60 fps, allowing for versatility in video production. The Sony Alpha a6400, on the other hand, also supports 4K video but adds additional features like time-lapse and slow-motion capabilities, making it a more versatile option for video creators who want to experiment with different filming techniques. If video functionality is a priority, the Sony might be the better choice.

Design and Portability

When considering design, the Canon EOS R100 is compact and lightweight, marketed as the smallest and lightest camera in the EOS R series. This makes it incredibly portable for travel and everyday use. The Sony Alpha a6400 is also compact but includes a flip screen that is particularly useful for vlogging and self-portraits. While both cameras are designed with portability in mind, the Canon’s lighter weight may appeal more to those who need to carry their camera for long periods.

Included Accessories

The Canon EOS R100 comes bundled with a 64GB memory card and a camera shoulder bag, adding extra value to its purchase. These accessories can be quite beneficial for new users who may not have additional gear. In contrast, the Sony Alpha a6400 does not come with any additional accessories like a memory card, but it does include essential items like a rechargeable battery and shoulder strap. While the Sony’s core offering is solid, the added accessories of the Canon provide a more appealing package for beginners.

Price and Value

The pricing difference between the two cameras is significant. The Canon EOS R100 is available for $579.00, while the Sony Alpha a6400 is priced at $835.90—indicating that the Canon is about 30% cheaper. This lower price point, combined with the included accessories, makes the Canon a compelling option for budget-conscious buyers who still want high-quality performance. However, the investment in the Sony may be justified for those who value its advanced features and slightly better performance in certain areas.

Which should you buy?

Deciding between the Canon EOS R100 and the Sony Alpha a6400 ultimately depends on your specific needs and budget. If you're looking for a high-quality mirrorless camera that offers great value with included accessories, the Canon EOS R100 is the better choice, especially at a price that is about 30% lower. However, if you require advanced autofocus capabilities and additional video functions, the Sony Alpha a6400 justifies its higher price with enhanced performance in those areas. Each camera has its strengths, so potential buyers should carefully consider what features matter most to them.