This mod deactivates the blurring in the distance when the player has entered a vehicle, meaning distant objects are shown sharper. This applies to both, to the indoor view and the outdoor view.
This mod does not deactivate the blurring of the player's third-person camera when walking around. There is a separate mod for this in ModHub from the modder “Rockstar” called “Disable Player Camera Blur”. Both mods are compatible with each other and can be used together.