Reasons to choose DC C640
Released in 2008, DC C640 has about 42 mm² of sensor area, 6 MP effective resolution, and a 140 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
BenQ DC C640
vs BenQ DC C750
VS
Sensor area
42 mm²
DC C64025 mm²
DC C750- Area ratio
- 1.71:1
- Absolute difference
- 18 mm²
- Relative difference
- 71%
The DC C640 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
DC C640MetricDC C750
6 MPEffective pixels7 MP
7.53 × 5.64Sensor5.75 × 4.32
2.66 µmPixel pitch1.88 µm
7.08 µm²Pixel area3.55 µm²
14.13 MP/cm²Pixel density28.18 MP/cm²
4.6Crop factor6.02
—Maximum video—
140 gWeight140 g
Secure DigitalStorageSDHC, Secure Digital
2x AABattery2x AA
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 DC C640 has the larger sensor area. The DC C640 and DC C750 have the same body weight. The DC C750 has the higher effective resolution. The DC C640 and DC C750 were both released in 2008. Also consider the lens system and subjects you shoot.
Reasons to choose DC C750
Released in 2008, DC C750 has about 25 mm² of sensor area, 7 MP effective resolution, and a 140 g body. Use these values to narrow the field, not as an overall image-quality score.