Updated for Rockstar Games Launcher easy installation and to avoid RGL updates, you can turn off your internet connection and go offline. Also fixed textures bug.

20.12.21  Color correction update and fixed bug with shader

4.05.21 fixed shadow bug for RGL version fixed car head light at night tweaked tree settings added more screens

For RGL version better don't install any textures mods or cars because this increase chance for update It has double check anyway if you see update in this way you need to change all files again sometimes it shows 0 bytes update it's fine
also update happens when you restart pc or rare when you close the game after just replace files again it works

I worked on this almost for a month 
this realease bright but adaptation balanced (Optional available Darker image)
reworked shader
better ambient light effect
more natural colors
sharper image 
changed settings for the sun 
better clouds
changed bloom
timecyc tweaks
other small changes
cutscens not too bright

screens from laptop patch 1.0.8.0
Compatibility: 1.0.3.0 - 1.0.8.0 - 1.2.0.43 Tested all versions
Medium and Low settings the best performance patches 1.0.3.0/1.0.4.0
to install you should choose patch then drag all files into GTAIV folder where the game installed
If your monitor too bright so better reduce it a bit while playing

Nvidia video card owners, open enbseries.ini

[GLOBAL]
ForceNVidiaCard=false  -  set here true
ForceNVidiaCaps=false

Credits:
AP84 (Timcyc and all settings, editing and changes of ENB)
ENBseries by Boris Vorontsov 
Dax1 (Shaderfix for last patches)
DKT70 (Blueshift code, Bloom, Roads)
IceLaGlace (Bloom, Lens code)
gp65cj04 (Bloom)
Marty McFly (Letterbox)