původní | barevně kódovaný |
# Date/Time : 2007:07:23 10:38:47 # Resolution : 1280 x 960 in jpeg (1424x1076 in pgm/47.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 -41 -38 -38 -54 -0.0943 -0.0505 -0.113 -0.0658 10 4 5 5 -11 0.00920 0.00664 -0.0229 0.00754 50 247 206 206 48 0.568 0.274 0.100 0.377 90 1231 1091 1091 210 2.83 1.45 0.438 1.93 99 4164 4524 4519 1857 9.57 6.01 3.87 7.26 100 16383 16383 16383 16383 37.7 21.8 34.2 27.3 # flux from 0.652*0.94 sr ( 8.59E-7 sr/4px) is 0.498 lx ( 0.518 lx tilewise); # tilewise luminance 0.884 cd/m2 with rel. SD 134 % (summing pixels below 15850 and with non-zero green: there is 94.2 % of them) # Fuji Devignetting: 1 # dark frame pgm/61.pgm subtracted from all values # Red average= 534.2 minimum= -133 maximum=16383 over 15850: 1977 zero: 5.5 % # GrUp average= 478.0 minimum= -129 maximum=16383 over 15850: 2239 zero: 5.8 % # GrDw average= 478.7 minimum= -140 maximum=16383 over 15850: 2244 zero: 5.9 % # Blue average= 137.0 minimum= -172 maximum=16383 over 15850: 1082 zero: 11.7 % End of results of "raw2lum" (version 1.22) with parameters: -c fuji -fa -sm100 -nh -nt -d pgm/61.pgm -i 47.txt -e 47.eps -n 47.ppm -t 118 -s71:76 pgm/47.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.