Reasons to choose PowerShot A40
Released in 2002, PowerShot A40 has about 21 mm² of sensor area, 1.9 MP effective resolution, and a 250 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon PowerShot A40
vs Canon PowerShot S1 IS
VS
Sensor area
21 mm²
PowerShot A4021 mm²
PowerShot S1 IS- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The PowerShot A40 and PowerShot S1 IS 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 A40MetricPowerShot S1 IS
1.9 MPEffective pixels3.2 MP
5.33 × 4Sensor5.33 × 4
3.35 µmPixel pitch2.58 µm
11.22 µm²Pixel area6.66 µm²
8.91 MP/cm²Pixel density15.01 MP/cm²
6.49Crop factor6.49
—Maximum video—
250 gWeight370 g
CompactFlash type IStorageCompactFlash type I, CompactFlash type II, Microdrive
AA (2) batteries (NiMH recommended)BatteryAA (4) 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 A40 and PowerShot S1 IS have the same sensor area. The PowerShot A40 has the lighter body. The PowerShot S1 IS has the higher effective resolution. The PowerShot S1 IS is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose PowerShot S1 IS
Released in 2004, PowerShot S1 IS has about 21 mm² of sensor area, 3.2 MP effective resolution, and a 370 g body. Use these values to narrow the field, not as an overall image-quality score.