Brightness HI3516EV300 + IMX335 is to high. How to change?

Hi,

I got an HI3516EV300 + IMX335 board. And it runs now almost very well. But only at daytime is the brightness to high. Some parts of the image are almost white. I have changed all settings under Majestic->Image but it doesn't fix this problem. Also Dynamic Range Compensation does not fix this. 

Is there any other way to get this correct?