Reasons to choose PowerShot A620
Released in 2005, PowerShot A620 has about 38 mm² of sensor area, 7.1 MP effective resolution, and a 235 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon PowerShot A620
vs Canon PowerShot G9
VS
Sensor area
38 mm²
PowerShot A62042 mm²
PowerShot G9- Area ratio
- 1.12:1
- Absolute difference
- 5 mm²
- Relative difference
- 12.1%
The PowerShot G9 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 A620MetricPowerShot G9
7.1 MPEffective pixels12.1 MP
7.11 × 5.33Sensor7.53 × 5.64
2.31 µmPixel pitch1.87 µm
5.34 µm²Pixel area3.51 µm²
18.74 MP/cm²Pixel density28.49 MP/cm²
4.87Crop factor4.6
—Maximum video—
235 gWeight320 g
MultiMedia, Secure DigitalStorageMultiMedia, SDHC, Secure Digital
AA (4) batteries (NiMH recommended)BatteryCanon Lithium-Ion 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 PowerShot G9 has the larger sensor area. The PowerShot A620 has the lighter body. The PowerShot G9 has the higher effective resolution. The PowerShot G9 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose PowerShot G9
Released in 2007, PowerShot G9 has about 42 mm² of sensor area, 12.1 MP effective resolution, and a 320 g body. Use these values to narrow the field, not as an overall image-quality score.