- Pix4D Documentation
- General
- Photogrammetry knowledge
Vertical vs oblique imagery
This article explains the difference between images taken at a vertical angle and images taken at an oblique angle.
Vertical images
Images taken by a camera pointing to the nadir direction. Pointing to the nadir means that the camera axis (in the direction of the lens) is perpendicular to the ground / object.
Oblique images
Images are taken with the camera axis not perpendicular to the ground / object.
![oblique_nadir_imagery.png](https://support.pix4d.com/hubfs/Knowledge%20Base%20Import/oblique_nadir_imagery.png)
Vertical and oblique imagery