Should the dynamic range of Nikon machines be turned on frequently? Can this eliminate black and white?

Dead black and dead white are underexposure and overexposure caused by poor exposure control. Dynamic range is another technical operation. You should first master the correct exposure, and then adjust the contrast according to the scene. Excessively large scenes are compensated for by dynamic range exposure. If you usually take photos, you will often see dead blacks and dead whites, and the dynamics are not enough to make up for it.