This is build 1935 of S.T.A.L.K.E.R. Shadow of Chernobyl, formally called S.T.A.L.K.E.R. Oblivion Lost. This was made by GSC Game World before they remade it and it was finally released in 2007. This was released by them after requests from fans of the game.
This is for those who complained about scopes being off-center in Lost Alpha Mod Pack 2014. Though running the game in DX9 mode (which actually provides the best potential visuals) fixes the problem. Read the description for more info.
Some people complained about off center scopes, which only happens in DX10 renderer to my knowledge. This should fix it. This is for Lost Alpha Mod Pack 2014 which can be found here.
Not that I advise using DX10 renderer due to how bad the aliasing is due to deferred rendering. Take a look at these images... the best Lost Alpha will ever look, all on DX9 renderer.