Reasons to choose Photosmart 318
Released in 2001, Photosmart 318 has about 21 mm² of sensor area, 2.3 MP effective resolution, and a 186 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
HP Photosmart 318
vs HP Photosmart 620
VS
Sensor area
21 mm²
Photosmart 31817 mm²
Photosmart 620- Area ratio
- 1.23:1
- Absolute difference
- 4 mm²
- Relative difference
- 23.4%
The Photosmart 318 has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
These cameras were released 1 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
Photosmart 318MetricPhotosmart 620
2.3 MPEffective pixels2.1 MP
5.33 × 4Sensor4.8 × 3.6
3.04 µmPixel pitch2.87 µm
9.27 µm²Pixel area8.23 µm²
10.79 MP/cm²Pixel density12.15 MP/cm²
6.49Crop factor7.21
—Maximum video—
186 gWeight207 g
CompactFlash type IStorageMultiMedia, Secure Digital
4x AABatteryAA (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 Photosmart 318 has the larger sensor area. The Photosmart 318 has the lighter body. The Photosmart 318 has the higher effective resolution. The Photosmart 620 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Photosmart 620
Released in 2002, Photosmart 620 has about 17 mm² of sensor area, 2.1 MP effective resolution, and a 207 g body. Use these values to narrow the field, not as an overall image-quality score.