1 - isometric cameras are made for creating game levels or strange renders. It make all algles parallel to the camera, so ou can best see the results using buildings and houses. So to betteruse Isometric cams you dont need to adjust the production frame, just use the  Zoom function to getyour subject in the scene, here if you move the camera forward or back it wil cut you subject away.

2 - Swap is a plugin from Inagoni for only 10 bucks:

http://www.inagoni.com/content.php?content.6

Follow me at euQfiz Digital