Tested only in the first level!
Call of Chtulhu 4 presets.
AMBIENT LIGHT (with lens dirt)
1.Less color near black and white
2.Less color near black and white + Depth of Field.
3.Normal color (with some vibrance)
4.Normal color (with some vibrance) + Depth of Field
Download "Call of Chtulhu ReShade" Here: http://www.moddb.com/games/call-of-cthulhu-dark-corners-of-the-earth/addons/call-of-chtulhu-reshade
1.Extract the content where you want (for example, to Desktop).
2.Open the folder that you extracted, and double clik to "Mediator.exe".
3.In the bottom left, click "Add" and select "CoCMAINWin32.exe" in the main folder and "Confirm"
(standard installation location: "C:\Program Files (x86)\Bethesda Softworks\Call Of Cthulhu DCoTE\Engine")
4.On the right, open the dropdown menu arrow (to the left of the "Delete" button) and choose one the following preset:
b)CoC LessColor + Dof
d)CoC NormColor + DoF
5.Play the game
Turn off in-game Antialiasing!