I often find it necessary to use both for the same shot. The one thing you can't do in tab is rotate the position of the camera, so I often have to go back and do that in regular camera mode. You're also stuck in one spot in terms of the camera's angle to the floor, so if that needs changing, back to regular camera mode. Also, the keys to hide and show walls don't work in tab mode, so that's something else to do before you get into it. What you see is what tab mode will show, so if there's a wall in the way, no amount of zooming in or out will help in tab mode. You have to get super close sometimes in regular mode so whatever is in the way isn't visible. The great thing is once you then go into tab mode, no amount of zooming in or out will bring that object into the shot. It's great for pictures of toddlers on the floor.