 | Pentax K-x | Samsung ST550 |
|---|---|---|
| Resolution | 12.9 Megapixel | 12 Megapixel |
| Sensor size | 23.6x15.8mm | 1/2.3-inch |
| Sensor type | CMOS | CCD |
| Digital zoom | No | Yes |
| Built-in flash | Yes | Yes |
| Video out | Yes | Yes |
| Video recording | Yes | Yes |
| File formats | JPEG, RAW, RAW - JPEG | JPEG |
| USB port | USB 2.0 Hi-Speed | USB 2.0 Hi-Speed |
| Firewire port | No | No |
| White balance | Auto, Cloudy, Daylight, Flash, Fluorescent, Manual, Shade, Tungsten | Auto, Cloudy, Daylight, Fluorescent, Incandescent, Manual |
| Self-timer | Yes | Yes |
| Bluetooth | No | No |
| Dimensions | 122.5x91.5x67 mm | 100x60x19 mm |
| Storage | SDHC, Secure Digital | SDHC, Secure Digital |
| Battery | 4x AA | Li-Ion |
| Minimum shutter speed | Bulb+30 sec | 8 sec |
| Maximum shutter speed | 1/6000 sec | 1/2000 sec |
| Maximum resolution | 4288x2428 pixels | 3968x2976 pixels |
| Minimum resolution | 1728x1152 pixels | 1024x768 pixels |
| Optical zoom | No | Yes |
| Auto focus | Yes | Yes |
| Manual focus | Yes | Yes |
| Flash modes | anti red-eye, auto, fill in, off, slow flash | anti red-eye, auto, fill in, off, slow flash |
| Aperture priority | Yes | No |
| External flash | Yes | No |
| Exposure compensation | -3EV - +3EV with 1/2 or 1/3EV steps | -2EV - +2EV with 1/3EV steps |
| Video sound | Yes | Yes |
| Maximum video resolution | 1280x720 pixels | 1280x720 pixels |
| Minimum video resolution | 320x240 pixels | 320x240 pixels |
| Frames per second (fps) | 24 | 30 |
| Voice recording | Yes | Yes |
| Optical viewfinder | Yes | No |
| Electronic viewfinder | No | No |
| LCD size | 2.7-inch | 3.5-inch |
| LCD monitor | Yes | Yes |
| Metering modes | Center weighted, Multi-segment, Spot | Center weighted, Matrix, Spot |
| ISO ratings (light sensitivity) | auto, 100 - 12800 | auto, 80, 100, 200, 400, 800, 1600, 3200 |
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