původní | barevně kódovaný |
# Date/Time : 2007:07:23 10:50:45 # Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/62.pgm) # Focal length : 5.7mm (35mm equivalent: 39mm) # CCD width : 5.32mm # Exposure time: 0.250 s (1/4) # 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)* 0.00133 # % R G1 G2 B readings R G B L / cd/m2 1 -59 -58 -58 -65 -0.136 -0.0771 -0.136 -0.0976 10 -17 -16 -16 -27 -0.0391 -0.0213 -0.0563 -0.0275 50 43 41 41 11 0.0989 0.0545 0.0229 0.0700 90 792 648 646 101 1.82 0.860 0.211 1.20 99 3124 2567 2562 364 7.18 3.41 0.759 4.73 100 16383 16383 16383 15921 37.7 21.8 33.2 27.3 # flux from 0.654*0.83 sr ( 8.59E-7 sr/4px) is 0.251 lx ( 0.264 lx tilewise); # tilewise luminance 0.376 cd/m2 with rel. SD 193 % (summing pixels below 15850 and with non-zero green: there is 82.6 % of them) # Fuji Devignetting: 1 # dark frame pgm/61.pgm subtracted from all values # Red average= 316.1 minimum= -142 maximum=16383 over 15850: 517 zero: 16.7 % # GrUp average= 262.0 minimum= -164 maximum=16383 over 15850: 498 zero: 17.4 % # GrDw average= 261.9 minimum= -154 maximum=16383 over 15850: 474 zero: 17.3 % # Blue average= 49.7 minimum= -167 maximum=15921 over 15850: 233 zero: 27.4 % End of results of "raw2lum" (version 1.22) with parameters: -c fuji -fa -sm100 -nh -nt -d pgm/61.pgm -i 62.txt -e 62.eps -n 62.ppm -t 118 -s71:76 pgm/62.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.