The aim of the bachelor's thesis was to acquaint the general forestry public with the basics of aerial photogrammetry and some possibilities of using unmanned aerial systems in forestry. Unmanned aerial systems are becoming more affordable and technically advanced. Processing and service software is also becoming more accessible. Thanks to the above, unmanned aerial systems are finding their way, not only to civil (recreational) activities, but also to various professional activities, including forestry. Therefore, in addition to basic knowledge about these systems, the work also provides information on the most important conditions of the flight according to current legislation. In this bachelor thesis we also deal with a practical description of the individual steps in creating a point cloud, orthophotomosaics and 3D digital terrain model, which results in a brief workflow in their creation in professional software Agisoft Metashape with the possibility of network calculations using other computers in the local network.