N900 VGA camera
The front camera is a VGA camera from ST microelectronics.
The datasheet lists the following specs.
- Size: 4.5*4.5*2.5mm
- Resolution: 640*480
- minimum illumination 7 lux.
- SNR at 100 lux 34dB
- Field of view: 66 degrees horizontal, 78 degrees diagonal.
The driver presents the camera as a video4linux device - /dev/video1.
This is connected via a multiplexor to the single camera bus on the CPU, along with the main camera. The two cannot be used at once.
This camera had severe performance problems under the original software release - under the one released in early January - in very good light, the picture is acceptable. In normal room light, the performance remains lower than would be hoped.