IMX708

IMX708 is a rolling shutter color sensor.

Spec	Value
Shutter type	rolling
Type	color
Sensor size	1/2.43" ( 10.5mm)
Pixel size	1.4 μm

RVC2 supported resolutions

Resolution name	Resolution size	Max FPS	MIPI lanes	Mode
`THE_12_MP`	4608x2592	15	2	Full resolution
`THE_2304X1296`	2304x1296	30	2	2x2 Binning
`THE_1080_P`	1920x1080	30	2	Cropped

RVC2 driver limits

Sensor driver adds support for that sensor to the RVC2. Here are RVC2 driver specifications for this sensorPart of the ISP (Image Signal Processor) is also the 3A (Auto Exposure, Auto White Balance, Auto Focus) algorithm. They are enabled by default, but you can also disable them and manually set the exposure, gain, white balance, etc.

Manual limits

Min FPS: 0.01
Min exposure time: 100 μs
Max exposure time: 1 / CAM_FPS seconds. Eg. 33ms @ 30FPS

Auto limits

Min exposure time: 1 μs
Max exposure time: Depends on the Anti-Banding mode:
- Anti-Banding mode OFF: 0 ms
- Anti-Banding mode 50Hz: 0 ms
- Anti-Banding mode 60Hz: 0 ms

Max AE exposure time depends on the Anti-Banding (AB) mode, which helps to avoid flickering when using artificial lighting. We can configure the AB using the API:

1cam = pipeline.create(dai.node.ColorCamera) # Or MonoCamera
2# "OFF", "MAINS_50_HZ", or "MAINS_60_HZ"
3cam.initialControl.setAntiBandingMode(dai.CameraControl.AntiBandingMode.OFF)

HDR

IMX708 sensor supports on-sensor HDR, so it can be leveraged by the Robotics Vision Core 2 (RVC2) as well.HDR image comparison in different exposure settings:

For the HDR image above we used the following argument for cam_test.py:

Python

1python3 utilities/cam_test.py -cams cama,c -cres 1296 -misc hdr-exposure-ratio=2
2python3 utilities/cam_test.py -cams cama,c -cres 1296 -misc hdr-exposure-ratio=4
3python3 utilities/cam_test.py -cams cama,c -cres 1296 -misc hdr-exposure-ratio=8

FPS Range

1920x1080: 1.14 - 67.
- With HDR minimum FPS is 2.28
2304x1296: 1.14 - 56.
- With HDR minimum FPS is 2.28
4608x2592: 0.58 - 14.3

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