Reasons to choose EOS R5 Mark II
Released in 2024, EOS R5 Mark II has about 864 mm² of sensor area, 45 MP effective resolution, and a 746 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon EOS R5 Mark II
vs Sony a1 II
VS
Sensor area
864 mm²
EOS R5 Mark II862 mm²
a1 II- Area ratio
- 1:1
- Absolute difference
- 2 mm²
- Relative difference
- 0.3%
The EOS R5 Mark II has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
Key specification differences
EOS R5 Mark IIMetrica1 II
45 MPEffective pixels50.1 MP
36 × 24Sensor35.9 × 24
4.38 µmPixel pitch4.15 µm
19.2 µm²Pixel area17.2 µm²
5.21 MP/cm²Pixel density5.81 MP/cm²
1Crop factor1
8,192 × 4,320Maximum video7,680 × 4,320
746 gWeight743 g
SD/SDHC/SDXC, CFexpress Type BStorageCFexpress Type A / SD (UHS-II)
LP-E6P lithium-ion battery Li-ion batteryBatteryNP-FZ100 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 R5 Mark II has the larger sensor area. The a1 II has the lighter body. The a1 II has the higher effective resolution. The EOS R5 Mark II and a1 II were both released in 2024. Also consider the lens system and subjects you shoot.
Reasons to choose a1 II
Released in 2024, a1 II has about 862 mm² of sensor area, 50.1 MP effective resolution, and a 743 g body. Use these values to narrow the field, not as an overall image-quality score.