Reasons to choose EOS 70D
Released in 2013, EOS 70D has about 338 mm² of sensor area, 20.2 MP effective resolution, and a 755 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon EOS 70D
vs Sony Alpha NEX-7
VS
Sensor area
338 mm²
EOS 70D367 mm²
Alpha NEX-7- Area ratio
- 1.09:1
- Absolute difference
- 29 mm²
- Relative difference
- 8.6%
The Alpha NEX-7 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 2 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
EOS 70DMetricAlpha NEX-7
20.2 MPEffective pixels24.3 MP
22.5 × 15Sensor23.5 × 15.6
4.09 µmPixel pitch3.88 µm
16.71 µm²Pixel area15.09 µm²
5.99 MP/cm²Pixel density6.63 MP/cm²
1.6Crop factor1.53
1,920 × 1,080Maximum video—
755 gWeight400 g
SD/SDHC/SDXCStorageSD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Rechargeable Li-ion Battery LP-E6 Li-ion batteryBatteryLithium-Ion NP-FW50 rechargeable 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 Alpha NEX-7 has the larger sensor area. The Alpha NEX-7 has the lighter body. The Alpha NEX-7 has the higher effective resolution. The EOS 70D is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Alpha NEX-7
Released in 2011, Alpha NEX-7 has about 367 mm² of sensor area, 24.3 MP effective resolution, and a 400 g body. Use these values to narrow the field, not as an overall image-quality score.