Reasons to choose PowerShot A310
Released in 2004, PowerShot A310 has about 21 mm² of sensor area, 3.1 MP effective resolution, and a 175 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon PowerShot A310
vs Sony Cyber-shot DSC-U20
VS
Sensor area
21 mm²
PowerShot A31021 mm²
Cyber-shot DSC-U20- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The PowerShot A310 and Cyber-shot DSC-U20 have the same sensor area. Compare pixel density, sensor architecture, and release generation to understand likely image-quality differences.
These cameras were released 2 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
PowerShot A310MetricCyber-shot DSC-U20
3.1 MPEffective pixels2 MP
5.33 × 4Sensor5.33 × 4
2.62 µmPixel pitch3.26 µm
6.88 µm²Pixel area10.66 µm²
14.54 MP/cm²Pixel density9.38 MP/cm²
6.49Crop factor6.49
—Maximum video—
175 gWeight118 g
CompactFlash type IStorageMemory Stick
AA (2) batteries (NiMH recommended)BatteryAAA (2) batteries NiMH supplied
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 PowerShot A310 and Cyber-shot DSC-U20 have the same sensor area. The Cyber-shot DSC-U20 has the lighter body. The PowerShot A310 has the higher effective resolution. The PowerShot A310 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Cyber-shot DSC-U20
Released in 2002, Cyber-shot DSC-U20 has about 21 mm² of sensor area, 2 MP effective resolution, and a 118 g body. Use these values to narrow the field, not as an overall image-quality score.