Lens data information can be exported into Reality Setup by using Camera Exporting section under Reality Exports tab.
Click ADD NEW → REALITY → LENS Content Browser.
Rename lens data as MyLens and double click on it. You can implement LensData information regrading to your specific lens information.
Click EDIT → PROJECT SETTINGS from top menu.
Scroll down, Click Exports under Reality category.
Click ➕ button. Select the lens you created.
Launch the Reality Control and press F7 to launch Reality Setup. Click PLAY on Reality Editor. On the nodegraph:
Click the Lens Node, under Lens Category, you can choose lens data that you exported.