DxOMark has now put the OnePlus 7T Pro through its camera test. The phone recorded the exact same overall score as the older OnePlus 7 Pro. That makes sense, of course, seeing as both phones feature essentially the same SoC and identical camera hardware. If cameras are your major concern, there's no point buying the OnePlus 7T Pro over the OnePlus 7 Pro.
https://www.notebookcheck.net/Don-t-buy-the-OnePlus-7T-Pro-over-the-OnePlus-7-Pro-if-cameras-are-your-priority.454368.0.html