free Retouch4me Frequency Separation plug-in for Adobe Photoshop = retouch4.me/frequencyseparation
--- video tutorials ---
How to Record Frequency Separation Action Correctly? = youtu.be/X1HAPPcwcwE
Frequency Seperation Plug-In = youtu.be/qlOvSfjFJJc
Frequenсy Separation - 3 bands better than 2? = youtu.be/kfxZrSm8utE
Is frequency separation safe? How to preserve your photo quality = youtu.be/jRx6S0y43DY