diff --git a/convert.sh b/convert.sh
index 8d3d341..889533b 100755
--- a/convert.sh
+++ b/convert.sh
@@ -2,15 +2,18 @@
 # @author Markus Birth <markus@birth-online.de>
 # Needs: Hugin (nona), exiv2, sed, realpath
 
-FILES="source.jpg"
+if [ "$#" = "0" ]; then
+    echo "RICOH Theta to PhotoSphere converter"
+    echo "Usage: $0 file1 [file2 file3 ... fileN]"
+    exit 1
+fi
 
-for f in $FILES; do
-
-    REALNAME=`realpath "$f"`
+while [ "$#" -gt 0 ]; do
+    REALNAME=`realpath "$1"`
     BASENAME=`echo "$REALNAME" | sed -nre 's/^(.*)\.[^.]+$/\1/p'`
     OUTNAME="${BASENAME}_xmp.jpg"
-
-    echo "Input : $REALNAME"
+    shift
+    echo "Input : $REALNAME ($# more left)"
     echo "Output: $OUTNAME"
 
     if [ -f "$OUTNAME" ]; then
@@ -18,19 +21,19 @@ for f in $FILES; do
         continue
     fi
 
-    INFO=`exiv2 -pa "$f" | grep "Pose.*Degrees"`
+    INFO=`exiv2 -pa "$REALNAME" | grep "Pose.*Degrees"`
     PITCH=`echo "$INFO" | grep "Pitch" | sed -nre 's/^.* ([0-9.-]+)$/\1/p'`
     ROLL=`echo "$INFO" | grep "Roll" | sed -nre 's/^.* ([0-9.-]+)$/\1/p'`
 
     echo "Pitch / Roll: $PITCH / $ROLL"
 
-#    echo "i w3584 h1792 f4 v360 r$ROLL p$PITCH y0 n\"$f\"" > "$BASENAME.pto"
+#    echo "i w3584 h1792 f4 v360 r$ROLL p$PITCH y0 n\"$REALNAME\"" > "$BASENAME.pto"
 #    echo "p w3584 h1792 f2 v360 r0 p0 y0 n\"JPEG q99\"" >> "$BASENAME.pto"
 #    nona -o "$OUTNAME" "$BASENAME.pto"
 #    rm "$BASENAME.pto"
-    echo -e "i w3584 h1792 f4 v360 r$ROLL p$PITCH y0 n\"$REALNAME\"\np w3584 h1792 f2 v360 r0 p0 y0 n\"JPEG q99\"" | nona -o "$OUTNAME" /dev/stdin
+    echo -e "i w3584 h1792 f4 v360 r$ROLL p$PITCH y0 n\"$REALNAME\"\np w3584 h1792 f2 v360 r0 p0 y0 n\"JPEG q99\"" | nona -g -o "$OUTNAME" /dev/stdin
 
-    exiv2 ex "$f"
+    exiv2 ex "$REALNAME"
     mv "$BASENAME.exv" "${BASENAME}_xmp.exv"
     exiv2 in -M "reg GPano http://ns.google.com/photos/1.0/panorama/" -M "set Xmp.GPano.PosePitchDegrees 0" -M "set Xmp.GPano.PoseRollDegrees 0" "${BASENAME}_xmp.jpg"
     rm "${BASENAME}_xmp.exv"