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Camera board • Re: Max shutter speed on GS Camera

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If you have a sensor connected, then "rpicam-apps --list-cameras" will confirm the min and max frame rate for each mode.
imx296 has only one mode, and I can see max framerate, but not min framerate:

Code:

pi@raspberrypi5:~ $ rpicam-vid --list-camerasAvailable cameras-----------------0 : imx296 [1456x1088 10-bit RGGB] (/base/axi/pcie@120000/rp1/i2c@88000/imx296@1a)    Modes: 'SRGGB10_CSI2P' : 1456x1088 [60.38 fps - (0, 0)/1456x1088 crop]1 : imx296 [1456x1088 10-bit RGGB] (/base/axi/pcie@120000/rp1/i2c@80000/imx296@1a)    Modes: 'SRGGB10_CSI2P' : 1456x1088 [60.38 fps - (0, 0)/1456x1088 crop]pi@raspberrypi5:~ $ 

Is there any possibility to force longer exposure or it is a limitation of pixel saturation level of this sensor (IMX296) ?
There is, HQ and GS camera allow for synchronous captures via XVS line:
https://www.raspberrypi.com/documentati ... s-captures

I misused that feature in running a single HQ camera in sink mode.
The time between two low pulses can be arbitrary.
viewtopic.php?p=2187828#p2187828

This is dark room with only Pi power led lit, with different "shutter times" (difference between two low pulses) between 12.5ms and 5min:
Image

The extreme I captured was a 1h(!) shutter time, every minute one of the 64 leds was lit for 1s, in 60min not all leds got lit:
Image

Statistics: Posted by HermannSW — Wed May 15, 2024 10:55 pm



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