use auto exposure from night time to day time

[LeifSec]

I have set auto exposure mode (exposure time = 0`) and

ae_enable: true
ae_exposure_mode: Normal

Starting the camera in the late morning all picture are going including in late evening when it is already dark long after sunset. In this time pictures has been take with in interval of a few minutes.

But then keep the camera running until the next morning after sunup and taking no further pictures the picture are much too bright. But than after talking several picture (~15 -- 20) they get darker and darker until they are OK again.

How does the auto exposure work? Do I have to take picture in short intervals to have always the next one adapted to environment brightness?