Reasons to choose PowerShot A420
Released in 2006, PowerShot A420 has about 17 mm² of sensor area, 4 MP effective resolution, and a 192 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon PowerShot A420
vs Canon PowerShot A470
VS
Sensor area
17 mm²
PowerShot A42025 mm²
PowerShot A470- Area ratio
- 1.44:1
- Absolute difference
- 8 mm²
- Relative difference
- 43.8%
The PowerShot A470 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
PowerShot A420MetricPowerShot A470
4 MPEffective pixels7.1 MP
4.8 × 3.6Sensor5.75 × 4.32
2.08 µmPixel pitch1.87 µm
4.32 µm²Pixel area3.5 µm²
23.15 MP/cm²Pixel density28.58 MP/cm²
7.21Crop factor6.02
—Maximum video—
192 gWeight165 g
MultiMedia, Secure DigitalStorageSDHC, Secure Digital
AA (2) batteries (NiMH recommended)BatteryAA (2) batteries (NiMH recommended)
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 A470 has the larger sensor area. The PowerShot A470 has the lighter body. The PowerShot A470 has the higher effective resolution. The PowerShot A470 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose PowerShot A470
Released in 2008, PowerShot A470 has about 25 mm² of sensor area, 7.1 MP effective resolution, and a 165 g body. Use these values to narrow the field, not as an overall image-quality score.