The default brightness setting of 0 (defined here) makes the image from my integrated camera very dark. I have a Lenovo ThinkPad T490 with an Acer integrated camera (5986:2113), and v4l2-ctl -l reports the brightness range is [0, 255] with a default value of 128.
I'm able to work around this by just setting the brightness when I launch a libuvc_camera node, but I'm posting this in case anyone else runs into it, and on the off-chance that it'd be feasible to use the system defaults instead of hard-coded defaults that might not be appropriate for all systems.
The default brightness setting of 0 (defined here) makes the image from my integrated camera very dark. I have a Lenovo ThinkPad T490 with an Acer integrated camera (5986:2113), and
v4l2-ctl -l
reports the brightness range is [0, 255] with a default value of 128.I'm able to work around this by just setting the brightness when I launch a
libuvc_camera
node, but I'm posting this in case anyone else runs into it, and on the off-chance that it'd be feasible to use the system defaults instead of hard-coded defaults that might not be appropriate for all systems.