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The realization of photogrammetric products (aerotriangulation, NMT, orthophotomap) on a mass scale (LPIS) with short deadlines involve certain difficulties resulting in deterioration of the quality parameters of the products. These problems are often due to a lack of proper organization of employees, and above all their insufficient technical expertise in the field of photogrammetry work. The research work presented here indicates imperfections in the methods used to develop photogrammetric products including orthophoto. A significant part of the resulting product did not meet the quality requirements defined by the technical guidelines of the project (such product required improvement). There were numerous errors of the orthophotomap, among others geometric distortions due to incorrectly generated DTM or decrease of the local contrast in relation to the original images, not allowing to qualify the orthophotomap as a fully-fledged product. During the research it was also found that an important determinant of the quality of products in photogrammetric production is the organizational and intellectual potential (knowledge and skills) of commercial companies. In relatively large number of errors occurring at all stages of production (to obtain photos, Aerial triangulation, DTM construction, orthophoto generation) the errors that significantly degrade the quality of photogrammetric products have been identified, defined and described. It was found that the quality of the final product which is the ortofotomap is influenced by the sum of errors generated at earlier stages of production.
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