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photos* Orthophoto is burdened by a local defect caused by tilt 
and roughness of the terrain, shifts on strips borders or image 
blurring and reduplication* All these make interpretation more 
difficult and reduce usefulness of orthophoto in some applications* 
Therefore, knowing the purpose for which the oi?thophotomap is 
produced one can choose both the ¿instrument and parameters of 
rectification and the proper observer* All these ensure needed 
cartometric accuracy and adequate quality of orthophoto image* 
The above mentioned factors are deciding in the problem of 
economic profitability of orthophoto production* 
Reproduction /printing of orthophoto is a separate subject* 
It is important not only from the point of orthophoto distribu 
tion but also from the point of reproduction cost* Orthophoto 
can be duplicated by: 
1/ photographic procedure as photoprints on paper or on stable 
film, 
2/ sereened or unscreened diazo prints, 
3/ offset screened printing* 
The problem of orthophoto reproduction has two aspects: 
1 - expensive cost when proper reproduction is expected* 
2 - difficulty in duplicating orthophoto* 
3* Economic parameters of profitability o f orthophotomap produc- 
tion 
Independently of the choice of the three above discussed factors 
economic parameters will always influence the orthophoto produc 
tion* These parameter are associated with the following four 
aspects: amortization, production 
contnuity and efficiency, and 
reliability of system performance* 
In the case of optical and mechanical instruments amorti 
zation is assumed for the period of ten years, but with 
electronic instruments only for five years* The capital expendi 
ture salvage must be also consider for the instrumentation 
which is occasionaly U3ed in map production* 
Production continuity of the applied 
equipment has an essential influence on the cost of the ortho 
photomap production* If orthophoto is produced periodically 
only then an equipment should be selected which could be also 
applied for some other photogrammetrie purposes. It decreases 
the degree of amortization surcharge on orthophoto product and 
raises the coefficient of instrumentation utilization of the 
company. 
Production efficiency in orthophoto depends, 
first of all* on the system efficiency* But in the case of the 
systems controlled and based on the man observer the said 
efficiency will be also dependent on the function of his know 
ledge, ability and experience* The system efficiency is based 
on two essential parameters: the width of strips and speed of 
scanning* It also depends on the rapidity of orientation, scaling 
and levelling as well as on the scale ratio between orthophoto 
and original photo in some systems* The width of 
strips is conditioned by the lay of the land, orthophoto