How to reduce normal map strength in Photoshop ?

iniside

Just like title says. I have nice normal map. It was good base for generating Cavity and AO in nDO, but it way to strong to use in CryEngine and procude very poor result.
Question is how to reduce strength of normal map in Photoshop ?

.morph3us

i asked something a while back:
http://www.polycount.com/forum/showthread.php?t=105935

iniside

Oh, thanks for pointing this out.