původní | barevně kódovaný |
# Date/Time : 2007:03:25 20:24:32 # Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/400.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 -67 -0.313 -0.170 -0.280 -0.220 10 -31 -27 -27 -31 -0.143 -0.0718 -0.129 -0.0965 50 1 6 6 0 0.00460 0.0159 0.00 0.0120 90 53 62 62 47 0.244 0.165 0.196 0.192 99 122 183 182 104 0.561 0.485 0.434 0.512 100 16209 16214 16206 16207 74.5 43.1 67.6 54.1 # veiling luminance 3.9E-4 cd/m2, flux from 0.00140 sr ( 8.59E-7 sr/4px) is 0.00742 lx ( 0.00915 lx tilewise); # tilewise luminance 0.375 cd/m2 with rel. SD 471 % (points with luminances over 2.0 and below 32 ) # Fuji Devignetting: 1 # dark frame dark/408.pgm subtracted from all values # Red average=1590.7 minimum= -142 maximum=16209 out of range: 764390 # GrUp average=2297.3 minimum= -151 maximum=16214 out of range: 764442 # GrDw average=2296.8 minimum= -137 maximum=16206 out of range: 764442 # Blue average=2767.1 minimum= -137 maximum=16207 out of range: 764191 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 400.txt -e 400.eps -n 400.ppm -t 118 -s71:76 pgm/400.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.