Default video settings
The automatic settings for video are not great on my LifeCam HD-3000. The Microsoft Camera app (Win 10) does a much better job at selecting appropriate settings. For example, in low light the Camera app appears to compensate, but in Teams I am barely visible. The feed appears to be higher quality in Camera too (but that might be a bandwidth thing).
If you're not going to provide detailed settings, you need to pick a better set of defaults.
Same issue with the MS Studio Life cam. It ist great with the Skype Desktop app, but in Teams it is underperforming...
Richard H commented
UDPATE: Adjusting the settings in Skype for Business seems to affect the Team app as well. Based on this information, the Teams app really needs to provide access to the same set of settings that the S4B app does, cause the auto settings aren't always great for the conditions.