@aosrlab Thank you for your feedback.

It is recommended to put two cameras together at the same location and point them to the same object and see if Live view pages look  the same? 

From the photos you shared, it is possible that object in the darker picture is further from the camera or shot environment is different.  

@aosrlab  Hello, 

Thank you for your reply and the photos. 

Though it does not seem to be firmware related, it is still recommended to check Tapo app--> Me--> Firmware update, and make sure firmware on both cameras are up-to-date.

If possible, please swap location of two cameras and see if Tapo V1 (1.0.16) still has a brighter image in night mode. 

As firmware1.0.16 is of Tapo C200 V1 while 1.1.4 is of V2, we will also make feedback to related department for a test and get back to you later. 

@aosrlab Good to know! Our team has tested Tapo C200 V2 but failed to reproduce the issue, from your information it could be firmware related then. Thank you for your update!