Reasons to choose PowerShot A100
Released in 2002, PowerShot A100 has about 15 mm² of sensor area, 1.2 MP effective resolution, and a 225 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon PowerShot A100
vs Canon PowerShot A310
VS
Sensor area
15 mm²
PowerShot A10021 mm²
PowerShot A310- Area ratio
- 1.41:1
- Absolute difference
- 6 mm²
- Relative difference
- 40.6%
The PowerShot A310 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 A100MetricPowerShot A310
1.2 MPEffective pixels3.1 MP
4.5 × 3.37Sensor5.33 × 4
3.55 µmPixel pitch2.62 µm
12.64 µm²Pixel area6.88 µm²
7.91 MP/cm²Pixel density14.54 MP/cm²
7.7Crop factor6.49
—Maximum video—
225 gWeight175 g
CompactFlash type IStorageCompactFlash type I
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 A310 has the larger sensor area. The PowerShot A310 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 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.