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Low light environment. Maximum value of exposure_time_absolute >10000 #218

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Neutrinium opened this issue May 11, 2023 · 1 comment
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@Neutrinium
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Neutrinium commented May 11, 2023

Hi, I am trying to use the camera to capture frames in a low light environment. The camera is a NoIR OV5647. The actual maximum value of exposure_time_absolute=10000 is not enough to get a good image. When I use the raspivid command, values of 500000-2000000 (0.5-2s) results in fine image.
I did some fiddling in the settings, but I couldn't get anything better. The default settings that I am using is attached in the image.
Is there a way to change the settings to get the desired shutter speed/fps needed in this case? Thanks a lot
Conf Rasp USB 2

@Neutrinium Neutrinium changed the title Low light environment. Maximum value of exposure_time_absolute=10000 is too low Low light environment. Maximum value of exposure_time_absolute >10000 May 13, 2023
@Neutrinium
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The problem lies with the v4l2-ctl, which is build to generic purposes and do not support all camera functionalities. And make sense since it is oriented to video feeds.

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