Reasons to choose Optio A40
Released in 2007, Optio A40 has about 42 mm² of sensor area, 12 MP effective resolution, and a 170 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Pentax Optio A40
vs Pentax Optio S12
VS
Sensor area
42 mm²
Optio A4042 mm²
Optio S12- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The Optio A40 and Optio S12 have the same sensor area. Compare pixel density, sensor architecture, and release generation to understand likely image-quality differences.
These cameras were released 1 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
Optio A40MetricOptio S12
12 MPEffective pixels12 MP
7.53 × 5.64Sensor7.53 × 5.64
1.88 µmPixel pitch1.88 µm
3.54 µm²Pixel area3.54 µm²
28.26 MP/cm²Pixel density28.26 MP/cm²
4.6Crop factor4.6
—Maximum video—
170 gWeight130 g
Internal storageStorageSDHC, Secure Digital
Lithium-Ion rechargeable Li-ion batteryBatteryLithium-Ion (D-LI78) 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 Optio A40 and Optio S12 have the same sensor area. The Optio S12 has the lighter body. The Optio A40 and Optio S12 have the same effective resolution. The Optio S12 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Optio S12
Released in 2008, Optio S12 has about 42 mm² of sensor area, 12 MP effective resolution, and a 130 g body. Use these values to narrow the field, not as an overall image-quality score.