The 2018 P-Series has good local dimming. The 65" model we tested is a FALD panel with 100 local dimming zones that perform quite a good job in dimming the blacks and enhancing the contrast. There is very little clouding as the algorithm is very aggressive. This results in somewhat dimmer whites but without sacrificing detail.

The 55" model (Vizio P55-F1) has only 56 local dimming zones whereas the 75" (Vizio P75-F1) has 120. These variations might have an impact on the local dimming effectiveness of these models.

Update 01/02/2019: The name for Vizio's local dimming feature has been renamed from Xtreme Black Engine Pro to Active Full Array.

Update 03/21/2019: We have been contacted by readers who have had issues with pulsing local dimming in some scenes on this TV (see this discussion thread. Please let us know in the discussions if you also experience this problem.