214 
  
  
  
  
dr’ mw 
0 -| 
0 r 
> 
S. 20 mm 
Lo - 
-10 4 
— — — average of four independent determinations 
according to the manufacturer 
  
Diagram 4. Radial distortion. Aviotar 27. Temperature 4 8°C. 
dr' u 
10 + ^. TRE 
  
- 10 = 
average of four independent determinations 
— — — according fo the manufacturer 
  
Diagram 5. Radial distortion. Aviogon 29. Temperature 4 8°C. 
A dr‘ microns 
  
x 
| =O 
+204 - _ 
| a >» 
+10 4 - x 
| _ x 
Les - x $< 
0 T T T T T T T T 7 ai 
| 19 20 30 40 50 on 70 80 90 r'mm 
#164 \ 
| N 
-204 « 
| NX 
-30 | NG 
- 40 o measured 1.XII 1956 x 
x 
=50 X measured 19.XII 1956 
Diagram 6. Radial distortion. Ross Xpress. c — 126,36 mm. Results of two deter- 
minations of the distortion with the same film. 
  
PARE NN ESS" 
A A 
ee ct 
SRE EEE CERTES