Summary: Everyone's needs are different. Between these two cameras, my choice would be the Canon R6 Mark II.
The Canon EOS R5 and Canon EOS R6 Mark II are both impressive mirrorless cameras, yet they cater to slightly different needs. Here's a comparison between the two, breaking down their key differences, strengths, and ideal use cases.
1. Sensor and Resolution
Canon EOS R5:
- 45-megapixel full-frame CMOS sensor.
- Provides extremely high-resolution images, allowing for significant cropping and detailed prints.
- Great for landscapes, studio, and wildlife photography where maximum detail is essential.
Canon EOS R6 Mark II:
- 24.2-megapixel full-frame CMOS sensor.
- Lower resolution compared to the R5 but still ample for most professional needs.
- The reduced resolution means smaller file sizes and often better low-light performance due to larger individual pixels.
Winner: Canon R5 for high resolution and detail. Canon R6 Mark II for low-light versatility and manageable file sizes.
2. ISO Range and Low-Light Performance
Canon EOS R5:
- ISO range: 100–51,200 (expandable to 102,400).
- Excellent low-light performance, though higher resolution can introduce noise at very high ISO levels.
Canon EOS R6 Mark II:
- ISO range: 100–102,400 (expandable to 204,800).
- Improved low-light capability thanks to a lower-resolution sensor, allowing for slightly cleaner results at high ISOs.
Winner: Canon R6 Mark II for better low-light performance and higher native ISO range.
3. Continuous Shooting Speed
Canon EOS R5:
- 20 fps with electronic shutter, 12 fps with mechanical shutter.
- Excellent for fast action, wildlife, and sports.
Canon EOS R6 Mark II:
- Improved to 40 fps with the electronic shutter, 12 fps with mechanical.
- This speed is particularly beneficial for wildlife and sports photographers who need high burst rates.
Winner: Canon R6 Mark II for its incredible 40 fps speed with the electronic shutter.
4. Autofocus System
Canon EOS R5:
- Dual Pixel CMOS AF II with up to 1,053 AF points.
- Animal, human, and face detection autofocus are highly accurate, with strong tracking performance.
Canon EOS R6 Mark II:
- Improved AI-driven autofocus system with Canon’s latest algorithms.
- Introduces new subject detection modes, such as horse tracking, and better performance in low light.
Winner: Canon R6 Mark II for slightly more advanced autofocus algorithms and subject tracking modes.
5. Video Capabilities
Canon EOS R5:
- 8K RAW video at 30 fps and 4K up to 120 fps.
- Very high-resolution video options, though the R5 has been known to experience overheating during long 8K recording sessions.
- Suitable for high-end video production, where resolution is paramount.
Canon EOS R6 Mark II:
- No 8K video, but records 4K up to 60 fps oversampled from 6K, delivering sharp 4K footage.
- Lower risk of overheating and is more practical for longer recordings.
- Also supports 6K ProRes RAW via external recording.
Winner: Canon R5 for pure resolution and versatility. Canon R6 Mark II for manageable and reliable 4K recording.
6. In-Body Image Stabilization (IBIS)
- Both cameras offer 5-axis in-body image stabilization, capable of up to 8 stops of stabilization when paired with compatible lenses.
Winner: Tie, as both provide similar stabilization performance.
7. Build and Handling
Canon EOS R5:
- Sturdier build with magnesium alloy and weather sealing.
- Larger EVF with a 5.76-million dot resolution, offering a clearer view.
Canon EOS R6 Mark II:
- Also robust and weather-sealed but with a slightly lower-resolution EVF (3.69 million dots).
- Slightly lighter body, which some may find more comfortable for extended handheld shooting.
Winner: Canon R5 for a more premium EVF and slightly sturdier build.
8. Battery Life
Canon EOS R5:
- Slightly lower battery life due to higher resolution sensor and processing demands.
Canon EOS R6 Mark II:
- Offers a better battery life overall, benefitting from lower resolution and a more efficient processing system.
Winner: Canon R6 Mark II for longer battery life.
9. Price
Canon EOS R5:
- Higher price point, reflecting its premium features and high-resolution sensor.
Canon EOS R6 Mark II:
- More affordable, appealing to enthusiasts and professionals not needing extreme resolution.
Winner: Canon R6 Mark II for affordability.
Summary: Which to Choose?
Choose the Canon EOS R5 if:
- You need maximum resolution for detailed images and cropping flexibility.
- You require 8K video capabilities for high-end productions.
- You prioritize a high-quality EVF and a sturdy build.
Choose the Canon EOS R6 Mark II if:
- You value speed, with 40 fps electronic shutter for action shots.
- You often shoot in low light and need high ISO performance.
- You want a versatile, reliable camera for general professional use without 8K video.
In short, the R5 is ideal for high-detail photography and top-tier video, while the R6 Mark II excels in speed, low-light performance, and is a solid all-around choice at a more accessible price.