It's worth noting that every texture in the game has been redone, and that those ugly tree models have been replaced with far superior ones (especially those awful snow tree ones from vanilla Skyrim). Environments also feel more alive because they've implemented proper flora density.
While playing you should also notice that clothing textures look better than they originally were, and there is in fact a depth of field slider to make it suit your preferences. The game is also a lot more brighter (looks more realistic honestly), getting rid of that nasty grey overtone. It also doesn't have that awkward Oblivion styled lighting. They've also added a quicksave option in the save menu.
The only thing that's mildly disappointing is that you STILL can't jump while sprinting, you have to stop sprinting, wait for that small delay, and then jump like in the Vanilla game, which just hurts gameplay when you're trying to run away from a serious threat. It's also unrealistic, because anyone who can run can jump while they're running. It's also a shame that the third person camera is tied to your character while walking still. Fallout 4 followed previous Bethesda games by letting you look at your character's face as you walked forward, allowing for some immersive dramatic walking moments.