Ground balance at factory 90 ,you can squeeze a little more out of it if you put exactly to what the ground mineralition is but my ground is real neutral so I just took Garys advice the one who shoots the xp deus training videos and the manuals and leave it at the factory preset 90 and works fine for me I know some will object but I have no mineralzaition to deal with really. I made a whole series of those videos and im gonna shoot one on the different frequencys and masked targets on my day off in my test garden to see if one frequency works better than others at umasking targets. There is a part 3 too but it keeps dissappearing from my channel go figure. thanks for watching guys they are my first ones but gonna keep practicing to get better.