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 Olympus D-490 Zoom
VS
Sensor area
21 mm²
PowerShot A4021 mm²
D-490 Zoom- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The PowerShot A40 and D-490 Zoom 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 A40MetricD-490 Zoom
1.9 MPEffective pixels1.9 MP
5.33 × 4Sensor5.33 × 4
3.35 µmPixel pitch3.35 µm
11.22 µm²Pixel area11.22 µm²
8.91 MP/cm²Pixel density8.91 MP/cm²
6.49Crop factor6.49
—Maximum video—
250 gWeight320 g
CompactFlash type IStorageSmartMedia
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 D-490 Zoom have the same sensor area. The PowerShot A40 has the lighter body. The PowerShot A40 and D-490 Zoom have the same effective resolution. The PowerShot A40 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose D-490 Zoom
Released in 2000, D-490 Zoom has about 21 mm² of sensor area, 1.9 MP effective resolution, and a 320 g body. Use these values to narrow the field, not as an overall image-quality score.