Reasons to choose SD1
Released in 2010, SD1 has about 384 mm² of sensor area, 15.4 MP effective resolution, and a 280 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Sigma SD1
vs Sigma SD15
VS
Sensor area
384 mm²
SD1286 mm²
SD15- Area ratio
- 1.34:1
- Absolute difference
- 98 mm²
- Relative difference
- 34.4%
The SD1 has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
Key specification differences
SD1MetricSD15
15.4 MPEffective pixels4.7 MP
24 × 16Sensor20.7 × 13.8
4.99 µmPixel pitch7.8 µm
24.94 µm²Pixel area60.78 µm²
4.01 MP/cm²Pixel density1.65 MP/cm²
1.5Crop factor1.74
—Maximum video—
280 gWeight750 g
Compact Flash (Type I, UDMA compatible)StorageSDHC, Secure Digital
Lithium-Ion rechargeable battery Li-ion batteryBatteryLithium-Ion rechargeable battery 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 SD1 has the larger sensor area. The SD1 has the lighter body. The SD1 has the higher effective resolution. The SD1 and SD15 were both released in 2010. Also consider the lens system and subjects you shoot.
Reasons to choose SD15
Released in 2010, SD15 has about 286 mm² of sensor area, 4.7 MP effective resolution, and a 750 g body. Use these values to narrow the field, not as an overall image-quality score.