původní | barevně kódovaný |
# Date/Time : 2007:07:23 10:48:33 # Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/60.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 -54 -52 -52 -63 -0.124 -0.0691 -0.131 -0.0884 10 -9 -8 -8 -24 -0.0207 -0.0106 -0.0501 -0.0142 50 72 66 66 17 0.166 0.0877 0.0355 0.115 90 691 565 563 104 1.59 0.749 0.217 1.04 99 3691 2999 2993 395 8.49 3.98 0.824 5.56 100 16383 16383 16383 16383 37.7 21.8 34.2 27.3 # flux from 0.653*0.87 sr ( 8.59E-7 sr/4px) is 0.274 lx ( 0.287 lx tilewise); # tilewise luminance 0.458 cd/m2 with rel. SD 174 % (summing pixels below 15850 and with non-zero green: there is 86.8 % of them) # Fuji Devignetting: 1 # dark frame pgm/61.pgm subtracted from all values # Red average= 328.7 minimum= -156 maximum=16383 over 15850: 972 zero: 12.2 % # GrUp average= 278.1 minimum= -153 maximum=16383 over 15850: 835 zero: 13.1 % # GrDw average= 278.0 minimum= -148 maximum=16383 over 15850: 845 zero: 13.3 % # Blue average= 53.9 minimum= -160 maximum=16383 over 15850: 343 zero: 23.7 % End of results of "raw2lum" (version 1.22) with parameters: -c fuji -fa -sm100 -nh -nt -d pgm/61.pgm -i 60.txt -e 60.eps -n 60.ppm -t 118 -s71:76 pgm/60.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.