397 
WIDE-ANGLE AERIAL SURVEY CAMERAS 
RMK 11.5/18 for a negative size of 18 cm x 18 cm 
(7"x7”), focal length 115 mm (4 1/2”) 
RMK 15/23 for the Anglo-American standard size 
of 9”x9” (23 cm x23cm), focal length 6" (153 mm) 
Both types of cameras are equipped with the new 
wide-angle Pleogon lensf/5.6-a high-perform 
ance lens with superb image resolution and 
100°/ o better illumination in the corners than with 
the Topogon lens. With a maximum distortion of 
only ± 4 microns the Pleogon is superior to all other 
lenses with an angular field of 100 9 . 
V 
/W\ 
2HHL 
AEROTOPO 
ZEISS-AEROTOPOGRAPH MUNICH 
München 27/ Western Germany / Ismaningerstr. 57