already available. Some of the methods accomplish the adjustment of strips, or 
blocks created by strips, using approximately conformal polynomes. For two 
years by now the "Anblock" adjustment in horizontal plane has been employed 
with much success, 
Experiments are aimed now at the adoption of "spatial "Anblock" and bundle 
adjustment techniques, The "Anblock" results are characterized by a linear 
mean error of only + 7-10 juni, with reference to the image plane. 
  
4, Cartographic utilization of photogrammetry 
In Hungary, photogrammetry for cartographic purposes is used mainly in 
solving the national mapping tasks. 
4,1 One of our most important cartographic task is the production and renewal 
of the official 1:10000: cadastral-topographic basic maps. This is accomplished 
by both differentiated and universal methods. Production consists, essentially, 
of photographing the 1:10000 map sheet /with an area of appr 22 km?, each/ in 
1:30000, 1:20000, or 1:13000 image scale. The geodetic control points in the 
area concerned are signalized prior to aerial photography, The universal 
method plots the planimetry from the 1:30000 negative and, based on the plotted 
planimetry, sets the low -flight models wherefrom the relief plotting is then 
carried out, The contour interval of these maps is 2.5, 2.0, and 1.0 m, re- 
spectively. 
For planimetric plotting or photo mapping, generally the exposures made with 
Aviogon or Universalviogon objectives of 152 mm camera focus, while for 
relief plotting both the above exposure types as well as those made with 88 mm 
camera focus Super Aviogon -II objectives are used. 
In the differential process the planimetric plotting is replaced by the prepara - 
tion of a photomap, one sheet from each picture. The photo-maps of medium 
elevation difference areas are designed, if required, by transformation by zones, 
using the SEG -V instrument /max. 3-4 zones /, whereas in the case of major 
3