public void ApplyItem()
{
tbExposure.Value = ovrSys.GetExposure();
tbGain.Value = ovrSys.GetGain();
tbBLC.Value = ovrSys.GetBLC();
tbWBRGain.Value = ovrSys.GetWhiteBalanceR();
tbWBGGain.Value = ovrSys.GetWhiteBalanceG();
tbWBBGain.Value = ovrSys.GetWhiteBalanceB();
cbWBAuto.Checked = ovrSys.GetWhiteBalanceAutoMode();
}