OnePlus had set the bar really high for the camera specs of their OnePlus 5 flagship and a lot of people expected to see how the phone’s imaging features would perform in everyday use.
DxOMark got the OnePlus 5 model in their hands (heck, they cooperated with the company during the development of its cameras according to official reports) and the results of the device were… not that overwhelming. The phone scored 87 points, which is very, very good in terms of everyday camera use, but not better than other flagship models (Galaxy S8 got 88, Google Pixel got 89). 
According to DxOMark, the dual camera of the device provides excellent outdoor shots with “outstanding color and detail”. DxO says the OnePlus 5’s white balance is often accurate, stable and consistent when shooting outside. It also provides impressive high dynamic scenes with well preserved details. On the other hand indoor shooting is just good, with certain problems during use in low light conditions, where the OnePlus 5 provides noticeable blur and lack of details in handheld shots.
Thankfully the flagship killer offers excellent focusing capabilities, with consistent autofocus thanks to its hybrid contrast detection AF and phase detection AF.
You can find all of DxOMark’s findings in this link and see all the details.
