The principal tools of photogrammetry are professional cameras with calibrated parameters of inner orientation and stable construction. However, due to increased quality and lower prices, the use of amateur digital cameras, where the parameters of inner orientation are determined during calibration, for certain photogrammetric purposes is growing. For the aim of this diploma thesis, the calibration of Nikon D70 digital camera was performed at the test area in the basement facilities of the Faculty of Civil and Geodetic Engineering, University of Ljubljana. The area consists of spatially located and properly identified points with spatial coordinates previously determined via the classic measurement method. The initial aim was to determine the parameters of inner orientation through the method of self-calibration within the compensation of aerotriangulation. During data analysis certain problems with the chosen software package AeroSys became evident, so the practical implementation was adjusted to the software capabilities (the parameters of inner orientation were determined by direct linear transformation). The results have shown that by using the described procedure and equipment, the accuracy to within several centimetres of photogrammetrically determined spatial coordinates can be achieved, which is acceptable for certain less demanding tasks of close-range photogrammetry.