Canon EOS R100 Mirrorless Camera with RF-S18- vs Canon EOS R6 Mark III Body
Updated August 2026 — Canon EOS R6 Mark III Body leads on image quality and video.
The Canon EOS R100 is a budget-friendly option for beginners, while the R6 Mark III offers advanced features for professionals.
Why Canon EOS R100 Mirrorless Camera with RF-S18- is better
Price
R100 is significantly cheaper at $579.
Portability
R100 is the smallest and lightest in the EOS R series.
Entry-level
R100 is ideal for beginners.
Why Canon EOS R6 Mark III Body is better
Image Quality
R6 Mark III has a 32.5MP full-frame sensor.
Performance
R6 Mark III features DIGIC X processor.
Video Capabilities
R6 Mark III can shoot 4K at 120 fps.
Overall score
Specifications
| Spec | Canon EOS R100 Mirrorless Camera with RF-S18- | Canon EOS R6 Mark III Body |
|---|---|---|
| Sensor | 24.1MP APS-C | 32.5MP Full-Frame |
| Processor | DIGIC 8 | DIGIC X |
| Autofocus | 143 zones | Dual Pixel AF II |
| Video FPS | 4K at 24 fps | 4K at 120 fps |
| Weight | Lightweight | Heavier |
Dimension comparison
Overview of the Canon EOS R100 and Canon EOS R6 Mark III
The Canon EOS R100 is priced at $579.00, making it about 79% cheaper than the Canon EOS R6 Mark III, which retails for $2,799.00. This stark price difference highlights the R100 as a more budget-friendly option, particularly for newcomers to photography. The R6 Mark III, however, justifies its higher price with advanced features that cater to professional photographers.
Image Quality and Performance
In terms of image quality, the R6 Mark III offers a substantial advantage with its 32.5MP full-frame CMOS sensor, compared to the R100’s 24.1MP APS-C sensor. This difference translates to higher resolution images with better detail and dynamic range in the R6 Mark III. The R100's DIGIC 8 image processor allows for decent performance but pales in comparison to the R6 Mark III's DIGIC X processor, which enhances overall speed and image processing capabilities.
Autofocus System
The autofocus systems of both cameras are noteworthy, but they cater to different needs. The R100 features Dual Pixel CMOS AF with 143 zones, making it suitable for general photography and casual video recording. In contrast, the R6 Mark III boasts Dual Pixel CMOS AF II with advanced detection capabilities for people, animals, and vehicles. This makes the R6 Mark III significantly more adept at capturing fast-moving subjects, making it ideal for wildlife or sports photography.
Video Capabilities
Both cameras offer impressive video capabilities, yet they serve different audiences. The R100 can shoot 4K video at up to 24 fps, which is a solid entry-level feature for budding videographers. However, the R6 Mark III takes video to the next level with 4K slow motion at 120 fps and the ability to record in Canon Log 2 for greater post-production flexibility. For those serious about videography, the R6 Mark III's advanced features make it the more compelling choice.
Build Quality and Design
When it comes to design, the R100 is compact and lightweight, making it the smallest and lightest camera in the EOS R series. This makes it an excellent choice for those who prioritize portability. The R6 Mark III, while slightly heavier, offers a robust build quality aimed at professionals who may require a more durable camera for demanding environments. Thus, the choice between them may depend on whether portability or durability is a higher priority.
Storage and Connectivity
The R6 Mark III provides more versatility in storage with dual card slots—one for CFexpress Type B and another for UHS II SD cards. This is particularly beneficial for professionals who need to manage large amounts of data quickly. The R100, while it also supports standard SD cards, lacks this dual-slot functionality, which could be a limitation for users who shoot extensively.
Price Comparison
The price difference between the R100 and R6 Mark III is substantial, with the R100 priced at $579.00 and the R6 Mark III at $2,799.00. This makes the R100 about 79% cheaper, appealing to beginner photographers or those on a budget. While the R6 Mark III’s features justify its price for professionals, the R100 offers excellent value for entry-level users seeking a quality mirrorless camera without breaking the bank.
Which should you buy?
Ultimately, the decision between the Canon EOS R100 and the Canon EOS R6 Mark III will depend on your specific needs and budget. If you are a beginner or a casual photographer looking for an affordable option with good image quality and portability, the R100 is an excellent choice. However, if you are a professional or serious enthusiast who needs advanced features, higher resolution, and superior performance, the R6 Mark III is well worth the investment.

