Reasons to choose Photosmart M637
Released in 2007, Photosmart M637 has about 25 mm² of sensor area, 7.2 MP effective resolution, and a 0 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
HP Photosmart M637
vs HP Photosmart R742
VS
Sensor area
25 mm²
Photosmart M63725 mm²
Photosmart R742- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The Photosmart M637 and Photosmart R742 have the same sensor area. Compare pixel density, sensor architecture, and release generation to understand likely image-quality differences.
Key specification differences
Photosmart M637MetricPhotosmart R742
7.2 MPEffective pixels7 MP
5.75 × 4.32Sensor5.75 × 4.32
1.86 µmPixel pitch1.88 µm
3.45 µm²Pixel area3.55 µm²
28.99 MP/cm²Pixel density28.18 MP/cm²
6.02Crop factor6.02
—Maximum video—
—Weight136 g
Secure DigitalStorageSecure Digital
2x AABatteryHP Lithium-Ion rechargeable supplied 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 Photosmart M637 and Photosmart R742 have the same sensor area. The Photosmart M637 has the lighter body. The Photosmart M637 has the higher effective resolution. The Photosmart M637 and Photosmart R742 were both released in 2007. Also consider the lens system and subjects you shoot.
Reasons to choose Photosmart R742
Released in 2007, Photosmart R742 has about 25 mm² of sensor area, 7 MP effective resolution, and a 136 g body. Use these values to narrow the field, not as an overall image-quality score.