I'm creating a portfolio for my ipad and I havent' been able to figure out how to do this.
What I want to do is:
If I have a portrait page, with 2 landscape images on it. I want to rotate the ipad to landscape and have those two images become two separate pages.
The only way I can think of doing it involves doubling pages or messing up the page count order so that when the next page were rotated, it wouldn't match up with the right image.
I suspect this is a DPS question and it's been asked before. No, there is no way to do what you want and to be quite honest I have no idea why you'd want to do it that way.
Dual orientation is, IMO, a waste of time and effort and to do what you're describing adds nothing to the reader experience at all.
Save yourself the aggrivation and pick one orientation and pour your effort into that by using MSOs to allow the reader to tap to enlarge the images.
You may want to follow up in the DPS forum.