původní | barevně kódovaný |
# Date/Time : 2007:07:23 10:58:13 # Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/70.pgm) # Focal length : 5.7mm (35mm equivalent: 39mm) # CCD width : 5.32mm # Exposure time: 0.500 s (1/2) # 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)* 6.64E-4 # % R G1 G2 B readings R G B L / cd/m2 1 -66 -59 -58 -70 -0.0759 -0.0389 -0.0730 -0.0518 10 -24 -16 -15 -30 -0.0276 -0.0103 -0.0313 -0.0163 50 27 40 40 13 0.0310 0.0266 0.0136 0.0281 90 118 184 184 78 0.136 0.122 0.0814 0.127 99 694 1205 1201 439 0.798 0.799 0.458 0.799 100 16374 16383 16321 16300 18.8 10.9 17.0 13.6 # flux from 0.652*0.87 sr ( 8.59E-7 sr/4px) is 0.0367 lx ( 0.0465 lx tilewise); # tilewise luminance 0.0785 cd/m2 with rel. SD 166 % (summing pixels below 15850 and with non-zero green: there is 86.9 % of them) # Fuji Devignetting: 1 # dark frame pgm/71.pgm subtracted from all values # Red average= 75.6 minimum= -220 maximum=16374 over 15850: 2176 zero: 15.6 % # GrUp average= 103.7 minimum= -163 maximum=16383 over 15850: 2894 zero: 13.0 % # GrDw average= 104.0 minimum= -147 maximum=16321 over 15850: 2904 zero: 13.3 % # Blue average= 54.5 minimum= -179 maximum=16300 over 15850: 1865 zero: 22.6 % End of results of "raw2lum" (version 1.22) with parameters: -c fuji -fa -sm100 -nh -nt -d pgm/71.pgm -i 70.txt -e 70.eps -n 70.ppm -t 118 -s71:76 pgm/70.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.