The first versions of the ENBSeries graphics library were developed several years ago by Boris Vorontsov. Since then, this modification has been gradually refined by the author, acquiring new functions and "sharpening" for various games.
The ENB library (as I understand it) works by replacing the standard game shaders with its own, i.e. various effects that the program adds to the game are implemented as post-processing of the final (already rendered by the game) image. That is why performance in some cases can significantly decrease, so get ready for the fact that the load on your computer will increase.
To put it simply, ENBSeries will add various modern visual effects to the game, such as softer and more contrasting shadows, Ambient Occlusion, bloom, motion blur, "honest" reflections on cars, reflective bump for surfaces and much more, without replacing no game files.
This archive contains last one for now original version of ENBSeries adapted for GTA: San Andreas (v0.075c test 2) and its default configuration file. I advise you to download it, and not "own versions" of ENB with clumsy settings that the "authors" of these very settings have recently sketched on the site, appropriating someone else's work.
I also put your configuration file , which was used in the global modification HRT Pack 1.2LS and which represents, in my opinion, the most optimal combination of graphic effects in terms of quality and performance, thanks to which the game looks good and "plays" quickly.
Keep in mind that the ENB setting is an individual thing and not everything may look the way I set it up on my video card, so study the documentation in the readme files (available in the archive) and on official website .
The screenshot shows the mod HRT Pack 1.2LS with ENBSeries included.