alexpre
Posts: 1
Joined: Thu May 14, 2020 1:23 pm

Auto Exposure for Raspi HQ Cam

Thu May 14, 2020 1:31 pm

I want to use the new HQ cam for longtime timelapses. But how can I set automaticly the exposure? At day this works, but in night I have to change the raspistill settings to different values. Even in the sunset/sunrise time these settings changes from picture to picture.
Maybe there is a tool which can analyse the last picture taken with the cam and based on the values of the picture (too dark/bright) I can change the -ss settings in my raspistill command.
Any idea how I can solve this?

cleveridiot
Posts: 10
Joined: Sun Sep 08, 2019 7:36 am

Re: Auto Exposure for Raspi HQ Cam

Fri May 15, 2020 1:13 pm

Interesting idea. I just got my HQ 16mm and was wondering about this too


dgalland
Posts: 22
Joined: Tue Aug 27, 2019 8:20 am

Re: Auto Exposure for Raspi HQ Cam

Fri May 15, 2020 5:26 pm

It seems to me that this tool exists, have you tried -ex auto ?
This will automatically adjust the shutter speed
However, the exposure will vary during the timelapse sequence
You may need to adjust other parameters (iso, fps, ...)

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