User Guide > 3D > 3D Objects > 3D Objects in 3D Scenes > Scale Factor > Calculating Scale Factor

Determining the Scale Factor for a 3D model

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Before importing a 3D object, you must consider the scale factor to use. You can calculate the appropriate scale factor for a 3D model by comparing the measuring units used by Storyboard Pro to the ones used by your 3D modeling software.

This can be done by using Storyboard Pro's world grid. The world grid displays a grid over your drawing layers or 3D models using Storyboard Pro's standard measuring unit but, unlike the 12 Field Grid, uses the same proportions for horizontal and vertical distances, like 3D modeling software do.  By laying this grid over a 3D object that is exaclty 1 unit in size in your 3D modeling software, you can compare the units used in your 3D modeling software to the units used in Storyboard Pro.