0° Equatorial grid m Oblique gra 
10? Oblique grid * 60? Oblique grid 
20? Oblique grid * 70? Oblique grid 
T Oblique grid 80? Oblique grid 
  
E» e 
    
   
       
     
  
  
   
    
  
   
   
     
   
   
ATTY 
SSIS 
CSC IIS 
OSSI 
ESSAIS 
FRS 
CEC RSET 
SE 
FF SS 
40° Oblique grid 90° Polar grid 
Figure 2. The sequence of grids with the geometry of the fisheye lens as generated mathematically. 
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