Off camber turns bring the road closer to your bike, having the same effect as leaning the bike further on a streight road. So in essense, treat it like a tri arc turn which enters into one radius, then decreases into a tighter radius before opening back up into the wise radius. If that makes any sense at all, you'll see that you have a few options.
1. Double apex. Brake, apexing early, accelerate lightly with minor lean over the off camber part, before apexing again right after, and then accelerating on exit. This is probably the safest way.
2. Harder one. Late apex the shit out of it. Drop you speed some prior to entry, and enter with a minor lean from the outside. Go past the inside in a line that will throw you out to the outside about 2/3's thru the corner, where you brake, lean hard, and exit. This will most likely have you braking hard right over the cambered section, its tricky to accomplish, but its probably the fastest way thru.
3. Play around with your line. Perhaps there is a way to avoid the dip all together.