Well I'm back, Found a new issue I am having issues with. I frequently shoot two tripod supported shots (wireless shutter, heavy manfrotto tripod), one ambient and one with flash. I only change shutter speed, never change aperture so as to not modify the shot. Also, I use back button focus so to not change focus lock. When I export in layers from LR into CS6 I normally do an auto align but there always seems to be a difference in the images so when I do a mask and blend via painting it always seems to lose sharpness, layers remain slightly misaligned. Is there a better or more precise was to align layers?