Reasons to choose EOS M
Released in 2012, EOS M has about 332 mm² of sensor area, 18 MP effective resolution, and a 298 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon EOS M
vs Sony Alpha SLT-A33
VS
Sensor area
332 mm²
EOS M367 mm²
Alpha SLT-A33- Area ratio
- 1.1:1
- Absolute difference
- 34 mm²
- Relative difference
- 10.3%
The Alpha SLT-A33 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 MMetricAlpha SLT-A33
18 MPEffective pixels14.2 MP
22.3 × 14.9Sensor23.5 × 15.6
4.3 µmPixel pitch5.08 µm
18.46 µm²Pixel area25.82 µm²
5.42 MP/cm²Pixel density3.87 MP/cm²
1.61Crop factor1.53
—Maximum video—
298 gWeight500 g
SD/SDHC/SDXCStorageSD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Lithium-Ion LP-E12 rechargeable battery Li-ion batteryBatteryRechargeable NP-FW50 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 SLT-A33 has the larger sensor area. The EOS M has the lighter body. The EOS M has the higher effective resolution. The EOS M is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Alpha SLT-A33
Released in 2010, Alpha SLT-A33 has about 367 mm² of sensor area, 14.2 MP effective resolution, and a 500 g body. Use these values to narrow the field, not as an overall image-quality score.