Reasons to choose EOS M3
Released in 2015, EOS M3 has about 332 mm² of sensor area, 24.2 MP effective resolution, and a 366 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon EOS M3
vs Nikon D7100
VS
Sensor area
332 mm²
EOS M3367 mm²
D7100- Area ratio
- 1.1:1
- Absolute difference
- 34 mm²
- Relative difference
- 10.3%
The D7100 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 M3MetricD7100
24.2 MPEffective pixels24.1 MP
22.3 × 14.9Sensor23.5 × 15.6
3.71 µmPixel pitch3.9 µm
13.73 µm²Pixel area15.21 µm²
7.28 MP/cm²Pixel density6.57 MP/cm²
1.61Crop factor1.53
1,920 × 1,080Maximum video1,920 × 1,080
366 gWeight675 g
SD/SDHC/SDXCStorageSD/SDHC/SDXC x 2
Li-ion Battery LP-E17 Li-ion batteryBatteryLithium-Ion EN-EL15 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 D7100 has the larger sensor area. The EOS M3 has the lighter body. The EOS M3 has the higher effective resolution. The EOS M3 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose D7100
Released in 2013, D7100 has about 367 mm² of sensor area, 24.1 MP effective resolution, and a 675 g body. Use these values to narrow the field, not as an overall image-quality score.