1) Remove all welcome mats, rugs, or any other objects
2) Open the door and keep it open
3) Place a gift card or credit card on the ground in front of the step (cover the numbers to keep it secure). The gift card in the photos is our magic trick for measuring.
4) Do not zoom in or out
5) Try to capture the entire step and the gift card in every photo
6) The scene should be the same in every photo, just captured from different angles