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Canon EOS R100 Mirrorless Camera with RF-S 18- vs Canon EOS R6 Mark III Mirrorless Camera with Extra

Updated August 2026 — Canon EOS R100 Mirrorless Camera with RF-S 18- wins on lens and usability, Canon EOS R6 Mark III Mirrorless Camera with Extra wins on weight and size.

The Canon EOS R100 is an excellent choice for beginners due to its affordability and user-friendly features, while the R6 Mark III offers superior performance for advanced photographers.

Why Canon EOS R100 Mirrorless Camera with RF-S 18- is better

Price

R100 is significantly cheaper at $579.

User-Friendly

Designed for beginners with simplified controls.

Included Lens

Comes with a versatile RF-S 18-45mm lens.

Why Canon EOS R6 Mark III Mirrorless Camera with Extra is better

Image Quality

R6 Mark III has a 32.5MP full-frame sensor.

Autofocus

Advanced Dual Pixel CMOS AF II with subject detection.

Performance

Supports up to 40 fps shooting for fast action.

Overall score

Canon EOS R100 Mirrorless Camera with RF-S 18-
65
Canon EOS R6 Mark III Mirrorless Camera with Extra
90

Specifications

SpecCanon EOS R100 Mirrorless Camera with RF-S 18-Canon EOS R6 Mark III Mirrorless Camera with Extra
Sensor24.1MP APS-C32.5MP Full-Frame
ProcessorDIGIC 8DIGIC X
AutofocusDual Pixel AFDual Pixel AF II
Continuous Shooting6.5 fps40 fps
VideoFull HD 60p4K 60p

Dimension comparison

Canon EOS R100 Mirrorless Camera with RF-S 18-Canon EOS R6 Mark III Mirrorless Camera with Extra

Overview of the Canon EOS R100

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 camera is designed for beginners, featuring a 24.1MP APS-C CMOS sensor, which delivers vibrant and detailed images. It's an ideal choice for those stepping into the world of mirrorless photography, as it combines ease of use with quality performance.

This compact camera kit includes the RF-S 18-45mm f/4.5-6.3 IS STM lens, a versatile option for various photography needs, from family portraits to travel landscapes. With an emphasis on accessibility, the R100 offers auto scene modes and simplified navigation, making it user-friendly for novice photographers.

Overview of the Canon EOS R6 Mark III

The Canon EOS R6 Mark III is a high-end mirrorless camera priced at $2,799.00. It boasts advanced features catering to serious photographers, including a 32.5MP full-frame CMOS sensor and the DIGIC X image processor. This combination allows for exceptional image quality and performance, particularly in challenging shooting conditions.

In addition to its impressive resolution, the R6 Mark III supports up to 40 frames per second in photo shooting, making it suitable for capturing fast-moving subjects. With dual card slots, including one CFexpress Type B card, it provides flexibility for storage options. This camera is designed for both enthusiasts and professionals looking for superior image quality and advanced shooting capabilities.

Image Quality Comparison

The Canon EOS R100 features a 24.1MP APS-C CMOS sensor, which produces high-quality images suitable for everyday photography. While this resolution is impressive for a beginner camera, it is outclassed by the R6 Mark III’s 32.5MP full-frame sensor. This difference translates to enhanced detail and depth, especially in low-light situations where full-frame sensors typically excel.

Furthermore, the R6 Mark III benefits from the DIGIC X image processor, enabling superior performance in terms of noise reduction and image processing speed. For those seeking the highest quality in their photography, the R6 Mark III’s capabilities present a significant advantage over the R100, particularly for professional use.

Autofocus Systems

The autofocus capabilities of both cameras cater to different needs, with the R100 equipped with Canon’s Dual Pixel CMOS AF, featuring 143 AF zones. This system provides fast and accurate focusing, making it suitable for beginner photographers who may need assistance tracking moving subjects. It is particularly effective for general photography and video, ensuring sharp results.

In contrast, the Canon EOS R6 Mark III utilizes Dual Pixel CMOS AF II, which enhances its focus capabilities further by incorporating features like People, Animal, and Vehicle detection. This advanced system allows for precise subject tracking, making it ideal for action and wildlife photography. The difference in autofocus performance could be a deciding factor for users who require more advanced tracking capabilities.

Usability and Design

The Canon EOS R100 is designed with user-friendliness in mind, featuring a compact and lightweight build that makes it easy for beginners to handle. With auto scene modes and a simplified menu navigation system, it facilitates a seamless learning curve for those new to photography.

On the other hand, the R6 Mark III, while still user-friendly, is tailored more for advanced users. It offers more customizable controls and a robust build, which may feel more substantial in hand. The presence of dual card slots adds to its professional appeal, allowing for greater flexibility in managing storage during shoots.

Lens and Compatibility

The Canon EOS R100 comes with the RF-S 18-45mm f/4.5-6.3 IS STM lens, which is versatile for various shooting scenarios. This lens is particularly advantageous for beginners as it offers a decent zoom range for capturing different types of photography, from portraits to landscapes. Additionally, built-in image stabilization helps mitigate camera shake for smoother handheld shots.

In contrast, the Canon EOS R6 Mark III does not include a lens in the base package, but its compatibility with a wider range of RF lenses provides more options for advanced photographers. Users can choose from a variety of lenses tailored to specific shooting needs, enhancing the camera's versatility. This difference may influence buyers depending on their immediate needs and future photography plans.

Price Comparison

The price difference between the two cameras is significant, with the Canon EOS R100 costing $579.00 and the R6 Mark III priced at $2,799.00. This means the R6 Mark III is approximately 384% more expensive than the R100. For beginners or casual photographers, the R100 offers a more accessible entry point into mirrorless photography without compromising essential features. However, for professionals or serious enthusiasts, the advanced capabilities of the R6 Mark III justify its higher price tag.

Which should you buy?

Choosing between the Canon EOS R100 and the Canon EOS R6 Mark III ultimately depends on your photography needs and budget. If you are a beginner looking for an affordable, user-friendly option with essential features, the R100 is an excellent choice at $579.00. However, if you are an advanced photographer seeking superior image quality, performance, and advanced features, the R6 Mark III, although significantly more expensive at $2,799.00, will provide the tools necessary for professional-level photography.