Reasons to choose EOS R3
Released in 2021, EOS R3 has about 864 mm² of sensor area, 24.1 MP effective resolution, and a 1,015 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon EOS R3
vs Canon EOS R6 Mark II
VS
Sensor area
864 mm²
EOS R3858 mm²
EOS R6 Mark II- Area ratio
- 1.01:1
- Absolute difference
- 6 mm²
- Relative difference
- 0.7%
The EOS R3 has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
These cameras were released 1 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
EOS R3MetricEOS R6 Mark II
24.1 MPEffective pixels24.2 MP
36 × 24Sensor35.9 × 23.9
5.99 µmPixel pitch5.95 µm
35.85 µm²Pixel area35.45 µm²
2.79 MP/cm²Pixel density2.82 MP/cm²
1Crop factor1
6,000 × 3,164Maximum video3,840 × 2,160
1,015 gWeight670 g
SD/SDHC/SDXC/UHS-II/CFexpress Type BStorageSD/SDHC/SDXC, UHS-II
Rechargeable Li-ion Battery LP-E19 Li-ion batteryBatteryLP-E6NH lithium-ion battery Li-ion battery
Amber marks the value that is generally preferable in this comparison context. It is not an overall camera score.
How to choose between these cameras
The EOS R3 has the larger sensor area. The EOS R6 Mark II has the lighter body. The EOS R6 Mark II has the higher effective resolution. The EOS R6 Mark II is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose EOS R6 Mark II
Released in 2022, EOS R6 Mark II has about 858 mm² of sensor area, 24.2 MP effective resolution, and a 670 g body. Use these values to narrow the field, not as an overall image-quality score.