--- ray/src/util/compamb.csh	1998/01/28 10:47:11	3.2
+++ ray/src/util/compamb.csh	1998/10/18 10:08:10	3.4
@@ -27,9 +27,10 @@ set oct=`rad -w -s -e -v 0 $argv[1] QUA=High AMB=$tf.a
 rad -n -s -V $argv[1] \
 	| rpict @$tf.opt -av 0 0 0 -aw 16 -dv- -S 1 -x 16 -y 16 -ps 1 $oct \
 	| ra_rgbe - '\!pvalue -h -H -d' > $tf.dat
+echo \# Rad input file modified by $0 `date` >> $argv[1]
 if ( $?doexpos ) then
 	(echo -n 'EXPOSURE= '; \
-		total -u $tf.dat | rcalc -e '$1=1/(.265*$1+.670*$2+.065*$3)') \
+		total -u $tf.dat | rcalc -e '$1=2/(.265*$1+.670*$2+.065*$3)') \
 		>> $argv[1]
 endif
 lookamb -h -d $tf.amb | rcalc -e '$1=$10;$2=$11;$3=$12' >> $tf.dat