Adjust exposure for 2018 fisheye camera

Change-Id: If4238386e6ffdc9767d74d0f114d683dcc1a1b59
diff --git a/y2018/vision/exposure_2018.sh b/y2018/vision/exposure_2018.sh
index e021919..c96f5f0 100755
--- a/y2018/vision/exposure_2018.sh
+++ b/y2018/vision/exposure_2018.sh
@@ -3,7 +3,7 @@
 set -e
 
 A=`ls /dev/video*`
-EXPOSURE='2000'
+EXPOSURE='100'
 
 echo $SHELL