původní | barevně kódovaný |
# Date/Time : 2007:03:25 20:35:45 # Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/416.pgm) # Focal length : 5.7mm (35mm equivalent: 39mm) # CCD width : 5.32mm # Exposure time: 0.125 s (1/8) # Aperture : f/2.8 # ISO equiv. : 200 # Selected image percentils L=(1.730*0.35*R+1.000*0.65*G+1.570*0.00*B)* 0.00266 # % R G1 G2 B readings R G B L / cd/m2 1 -68 -64 -64 -68 -0.313 -0.170 -0.284 -0.220 10 -31 -26 -27 -32 -0.143 -0.0704 -0.134 -0.0957 50 3 7 7 0 0.0138 0.0186 0.00 0.0169 90 54 64 64 46 0.248 0.170 0.192 0.197 99 103 117 118 85 0.474 0.312 0.355 0.369 100 15884 15881 15881 15882 73.0 42.2 66.3 53.0 # veiling luminance 1.8E-4 cd/m2, flux from 1.97E-4 sr ( 8.59E-7 sr/4px) is 0.00124 lx ( 0.00138 lx tilewise); # tilewise luminance 0.170 cd/m2 with rel. SD 618 % (points with luminances over 2.0 and below 32 ) # Fuji Devignetting: 1 # dark frame dark/408.pgm subtracted from all values # Red average=2132.4 minimum= -143 maximum=15884 out of range: 765873 # GrUp average=2012.0 minimum= -136 maximum=15881 out of range: 765868 # GrDw average=1876.3 minimum= -149 maximum=15881 out of range: 765872 # Blue average=2251.4 minimum= -141 maximum=15882 out of range: 765834 zero: 1.4 % End of results of "raw2lum" (version 1.29) with parameters: -c fuji -ft -sm60:8 -np -nt -nh -d dark/408.pgm -L2 -U32 -G -i 416.txt -e 416.eps -n 416.ppm -t 118 -s71:76 pgm/416.pgm
Meze stupňů jsou (bráno pro řád jednoho nitu) 0.32 0.50 0.79 1.26 2.0 3.2
Odhady intenzity osvětlení asfaltových cest v luxech lze získat vynásobením jasu v nitech koeficientem 15 (pokud se v něm lampa leskne) až 30, běžně kolem 22.