Currently using a couple of low-light 4k ZED ONES with a Jetson. The SDK docs imply a maximum exposure time of about 20ms (setting exposure to 100%). The argus driver reports a max of about 39ms (using “sample_mono” code in the zedx-one-capture repo on github). Is it possible to access longer exposure times at lower framerates?
Hi @jimmy
Welcome to the Stereolabs community.
You are using the “old” setting that works for both USB 3 and GMSL 2 cameras, but with ZED X One you can use another setting that allows you to set exposure time manually.
Instead of using EXPOSURE try to use EXPOSURE_TIME
Got it. Using EXPOSURE_TIME, I was able to set the exp time to 39ms via sl API calls. However I am unable to increase beyond that.
Is this 39ms limit due to a setting in the Jetson DTS or does the API prevent longer exp times to preserve frame rate?
There is a limitation in the DTS file for each grab rate with 80% of the total FPS range to avoid exposure overflow
If you set the grab rate to 15FPS, you should be able to reach 50ms