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Help > Working with Unknown Cameras and Photographs > Inverse Camera > Check for coverage of object
Check for coverage of object

First check to see if the object or scene you want measured is fully covered by the photographs.

Good example: you want to measure the fender on a car and the photographs you have include the fender and a good part of the car around it.

Bad example: you want to measure a road intersection but none of the photos you have include the north east or north west corners.