Pentax 1 deg spotmeter
Fibre light at 4m, meter on Gitzo tripod with angular scale                                                                                 
raef, 15/12/96
                                                                                          
Angle_deg EV_left   EV_right  Gauss     I_left    I_right
---------------------------------------------------------                       
0.1       17        17        0.983     1         1         
0.5       16.7      16.7      0.6514    0.8122    0.8122
1         13.7      13.5      0.18      0.1015    0.0884
1.5       12        12.3      0.0211    0.0312    0.0385
2         7.5       7.3       0.0011    0.0014    0.0012
3         6         5.7       2E-07     0.0005    0.0004    
4         4.7       4.7       1E-12     0.0002    0.0002    
5         4.3       4         2E-19     0.0001    0.0001
8         4         3.6       2E-48     0.0001    7E-05     
10        3.7       3.3       3E-75     8E-05     6E-05
          
          
          Zero pt   1.3 EV    (light off)                             

          gauss_sigma         0.54 deg
          gauss_FWHM          1.27 deg