Adjust exposure for 2018 fisheye camera

Change-Id: If4238386e6ffdc9767d74d0f114d683dcc1a1b59
diff --git a/y2018/vision/startup.sh b/y2018/vision/startup.sh
index 5251380..6cb211a 100755
--- a/y2018/vision/startup.sh
+++ b/y2018/vision/startup.sh
@@ -38,7 +38,7 @@
 
 v4l2-ctl --set-ctrl="exposure_auto=1" -d $A
 sleep 0.5
-v4l2-ctl --set-ctrl="exposure_absolute=2000" -d $A
+v4l2-ctl --set-ctrl="exposure_absolute=100" -d $A
 sleep 0.5
 
 PATH="./;$PATH"