Canon EOS R100 Mirrorless Camera RF-S18- vs Sony a7 IV Mirrorless Digital Camera
Updated August 2026 — Canon EOS R100 Mirrorless Camera RF-S18- wins on portability, Sony a7 IV Mirrorless Digital Camera wins on accessories and video capability.
The Canon EOS R100 is an excellent entry-level camera, while the Sony a7 IV is a superior choice for advanced users. Choose based on your experience level and budget.
Why Canon EOS R100 Mirrorless Camera RF-S18- is better
Price
Canon EOS R100 is significantly cheaper.
Portability
Canon is smaller and lighter.
Ease of Use
Canon is designed for beginners.
Why Sony a7 IV Mirrorless Digital Camera is better
Image Quality
Sony has a higher resolution sensor.
Video Features
Sony supports 4K 60p video.
Autofocus
Sony has a more advanced autofocus system.
Overall score
Specifications
| Spec | Canon EOS R100 Mirrorless Camera RF-S18- | Sony a7 IV Mirrorless Digital Camera |
|---|---|---|
| Sensor | 24.1MP APS-C | 33MP Full-Frame |
| Video | 4K 24p | 4K 60p |
| Autofocus | 143 points | 759 points |
| Image Processor | DIGIC 8 | BIONZ XR |
| Lens Included | RF-S18-45mm | FE 28-70mm |
Dimension comparison
Overview of the Canon EOS R100 and Sony a7 IV
When comparing the Canon EOS R100 and the Sony a7 IV, it's clear that these two mirrorless cameras cater to different audiences and needs. The Canon EOS R100 is priced at $579.00, making it about 75% cheaper than the Sony a7 IV, which retails for $2,298.00. While both cameras offer impressive features, they target different levels of photography expertise and intended use cases.
Image Quality
The Canon EOS R100 features a 24.1 megapixel APS-C CMOS sensor, delivering stellar image quality with natural bokeh. This sensor excels in capturing high-resolution images that are perfect for entry-level photographers. In contrast, the Sony a7 IV boasts a more advanced 33MP full-frame Exmor R CMOS sensor, which promotes high clarity, low noise, and vivid color rendering. This difference in sensor size and resolution means that the Sony a7 IV is better suited for professional photographers or serious enthusiasts seeking the highest quality in their images.
Video Capabilities
Both cameras support 4K video recording, but they do so in different ways. The Canon EOS R100 can record 4K video at up to 24 frames per second and Full HD video at 60 fps, making it a solid choice for beginners looking to dive into 4K content creation. Meanwhile, the Sony a7 IV offers enhanced video capabilities, allowing for 4K 60p video in 10-bit, which is ideal for filmmakers who require greater color depth and detail. This sophisticated video feature set is a significant advantage for those who prioritize video production.
Autofocus Performance
The Canon EOS R100 incorporates a Dual Pixel CMOS AF system that covers 143 zones, featuring human face and eye detection for both stills and video. This autofocus system provides a reliable performance for users capturing moving subjects. On the other hand, the Sony a7 IV takes autofocus to the next level with its 759-point Fast Hybrid AF system, real-time Eye AF, and focus breathing compensation. For photographers and videographers who need precision and speed, the Sony a7 IV's autofocus capabilities stand out significantly.
Design and Portability
In terms of design, the Canon EOS R100 is compact and lightweight, making it the smallest and lightest camera in the EOS R series. Its portability is an attractive feature for travelers and casual photographers. Conversely, the Sony a7 IV is larger and heavier, which may make it less convenient for on-the-go use. However, its build quality and ergonomics are designed for professional use, creating a balance between durability and functionality.
Lens and Accessories
The Canon EOS R100 comes with the RF-S18-45mm F4.5-6.3 IS STM lens, providing versatility for various shooting scenarios. Its compact size adds to the camera's portability. In contrast, the Sony a7 IV is bundled with the Sony FE 28-70mm f/3.5-5.6 OSS lens, along with an extensive list of accessories, including a 128GB memory card, filters, and a tripod. This deluxe bundle enhances the overall value of the a7 IV for users who want a complete kit for immediate use.
Battery Life and Performance
The Canon EOS R100 can capture up to 6.5 shots per second in One-Shot AF mode, which is impressive for an entry-level camera. However, the Sony a7 IV offers a more robust performance with up to 10 fps shooting. This difference could be significant for photographers who frequently shoot fast-moving subjects, as the a7 IV allows for more frames to be captured in quick succession. Additionally, the Sony camera's battery life tends to be longer, making it more suitable for extended shooting sessions.
Price Comparison
The price difference between these two cameras is substantial. At $579.00, the Canon EOS R100 is about 75% less expensive than the Sony a7 IV, which is priced at $2,298.00. This major price gap reflects the difference in target markets, with the Canon appealing to entry-level users and the Sony catering to more advanced photographers who are willing to invest significantly in their equipment. The Canon's lower price point makes it an attractive option for those just starting in photography, while the Sony's price includes many additional features and accessories that justify its cost.
Which should you buy?
Choosing between the Canon EOS R100 and the Sony a7 IV ultimately depends on your photography needs and budget. If you're a beginner or casual photographer looking for a lightweight, budget-friendly option, the Canon EOS R100 is an excellent choice, particularly for its ease of use and impressive image quality. However, if you're a seasoned professional or a serious enthusiast seeking advanced features, superior autofocus, and enhanced video capabilities, the Sony a7 IV, despite its higher price, offers a more comprehensive solution.

