In last decades possibilities of technologies progressed and new ways of usage also in forestry comes with it. In our study, we used close-range photogrammetry (CRP) to estimate diameter at breast height (DBH) from the point clouds derived from images captured in study site. Images were taken by DSLR camera Canon 5D Mark II with 21.1 megapixels and full-frame CMOS sensor and SLR camera Panasonic Lumix DMC – FZ50 10.1 megapixels CCD sensor. Square study site with 30x30 meters was established in a beech forest stand. We measured DBH on 67 trees which were located in the plot afterwards we colected images by stop and go method. To generate 3D pointcloud from images we used Agisoft Photoscan and for derivation of DBH from this point cloud we used DendroCloud. Outcomes were compared with data measured by the tape. Altogether, with camera Canon we detected 94 % of the trees and RMSE of DBH estimation was 2.8 cm. With camera Panasonic we detected 81 % of the trees and RMSE of DBH estimation was 5,6 cm. If this technique will be used in the future forestry inventory practise, it will be necessary to find out method which will ensuere that all the trees in the plot are goint to be detectd.