diff --git a/sensors/finger/sensor.json b/sensors/finger/sensor.json
index 2d34f4e..d0cc395 100644
--- a/sensors/finger/sensor.json
+++ b/sensors/finger/sensor.json
@@ -6,7 +6,7 @@
     "resolution_raw": [1280, 720],
     "fps": 30,
     "resolution_stitch": [280, 300],
-    "source_scale": 0.4,
+    "source_scale": 0.42,
     "old":[672, 728, 1,0.5],
     "work": [504, 546,1],
     "work2": [420, 450,0.8],
@@ -22,7 +22,7 @@
     "dis_preset": "medium",
     "dis_mode": 1,
     "algorithm_list": ["raft", "dis"],
-    "hhd_downsample": 2
+    "hhd_downsample": 3
   },
   "filters": {
     "flow_ema_alpha": 1.0,