I started my imaging sequence with BackyardEOS about 10 minutes ago. I couldn't see it, but my camera picked up the first bit of the eclipse before I could see it with my naked eyes.
I'm using a tracking mount, so my settings once we get to totality will probably be much different than most. I started out at ISO 100, 1/250th, f/8 w/ 600/4 II. That pushes the histogram to the right with my 7D, but not too far that the highlights blow out. The current part of my imaging sequence has dropped to 1/125th second now, and it'll drop to 1/60th about the time the moon is half-eclipsed...not yet sure exactly what settings I'll be using once the moon is fully within the umbra...
It started while I was still fooling around getting my camera setup. Its set to take a shot every 9 minutes, I'll adjust the exposure in a bit.
Yes, its all manual, and a lot of skill is involved. I will be happy if just a few shots come out. I'm not going to stay up all night fiddling with it.