Depth.
Vanilla Skyrim is blurry, washed out, has a green tint, and looks pretty flat even with ambient occlusion enabled, sky banding is also a problem. These are the issues fixed by Depth Reshade. Firstly and most importantly the image is sharpened, as if you are playing at a higher resolution, low-res textures are crisper and HD textures look really good. Green tint is gone, from Fallout 3 to Mass Effect 2, sickly green looks awful so Depth changes that in favour of a more natural blue tint which suits Skyrim's harsh climate. Skyrim AO is too subtle so a lightweight shader is used to enhance it without introducing secondary ambient occlusion, and bugs. This gives a feeling of DEPTH and makes dungeons and nights slightly darker. Lastly deband fixes the sky.
Deep Depth.
A bit darker and more colourful, like Oblivion. I tweaked this for Azurite Weather but it can be used with any setup.
Installation is simple, just download my preset and put it in your game folder (not data) then download the latest Reshade installer Home (reshade.me) and choose my preset when it asks you to. Hit the Home key in game to customise settings, and be sure to tick the performance mode box when you are done.