How to center geometry view?

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I find it easier to move cameras and objects in geometry view. But when I get a top down view, all my stuff is off to the side when I zoom in. How can I recenter all the models and cameras?

[figure1a]

Never mind. It's been a while since I used keyshot. I forgot that whatever tool you have selected in the main window also affects your movement in geometry view. I had the main window set to Tumble and therefore could not Pan in my geometry view. All sorted now.