My filter Mod_LCS.py has just been officially published by Rod (thanks a lot!).
Those who want to download it now do not need any more to go thru the threads to find where is it !
This filter has a double "face":
1- it may be used as it is to adjust Luminosity, Contrast and Saturation all together (you find it under Diego/Colours
in this case the user sets the target values for the 3 aspects and the filter either adjust the values automatically taking into consideration the distance of the current values from the targets or it tries to approch the desired values using a strong or normal or weak action (user choice)
2- it is used as ancillary function in many of my filters (for that reason many of you have downloaded it)

an example of standalone use:
original

to get more dramatic effect, forcing a "strong" adjustment to values 128-96-120

Thank you so much Dinasset. I think I made a mistake trying to find it to post here in the forum. This filter is very useful to enhance any photo.

Thank you, Dinasset. I find it a very useful tool.