Reasons to choose EOS 5DS R
Released in 2015, EOS 5DS R has about 864 mm² of sensor area, 50.6 MP effective resolution, and a 930 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon EOS 5DS R
vs Sony Alpha A99 II
VS
Sensor area
864 mm²
EOS 5DS R862 mm²
Alpha A99 II- Area ratio
- 1:1
- Absolute difference
- 2 mm²
- Relative difference
- 0.3%
The EOS 5DS R 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 5DS RMetricAlpha A99 II
50.6 MPEffective pixels42.4 MP
36 × 24Sensor35.9 × 24
4.13 µmPixel pitch4.51 µm
17.08 µm²Pixel area20.32 µm²
5.86 MP/cm²Pixel density4.92 MP/cm²
1Crop factor1
1,920 × 1,080Maximum video3,840 × 2,160
930 gWeight849 g
SD/SDHC/SDXC, CompactFlashStorageSD/SDHC/SDXC/MS PRO Duo
Battery Pack LP-E6BatteryNP-FM500H 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 5DS R has the larger sensor area. The Alpha A99 II has the lighter body. The EOS 5DS R has the higher effective resolution. The Alpha A99 II is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Alpha A99 II
Released in 2016, Alpha A99 II has about 862 mm² of sensor area, 42.4 MP effective resolution, and a 849 g body. Use these values to narrow the field, not as an overall image-quality score.