diff --git a/EvalFocus.lua b/EvalFocus.lua
index 2f6a6cb..c13b05f 100755
--- a/EvalFocus.lua
+++ b/EvalFocus.lua
@@ -16,7 +16,7 @@ local prefs = import 'LrPrefs'.prefsForPlugin()
 --Logger:enable('logfile')
 
 local MINRESULT = 5
-local LOW_BRISQUE = 4
+--local LOW_BRISQUE = 4
 local CurrentCatalog = LrApplication.activeCatalog()
 local python = '/opt/homebrew/bin/python3 '
 local script = '/evalfocus.py '
@@ -62,7 +62,7 @@ LrTasks.startAsyncTask( function ()
 				end
 			else
 --				Logger:info('skip non JPEG file.')
-			end --isVidep
+			end --isVideo
 			ProgressBar:setPortionComplete(i, countPhotos)
 		end --end of for photos loop
 		ProgressBar:done()
diff --git a/Info.lua b/Info.lua
index 9c94af1..59ec070 100755
--- a/Info.lua
+++ b/Info.lua
@@ -22,6 +22,6 @@ return {
 		file = 'EvalClear.lua',
 		enabledWhen = 'photosAvailable',},
 	},
-	VERSION = { major = 0, minor = 7, revision = 3, build=0, },
+	VERSION = { major = 0, minor = 8, revision = 0, build=0, },
 
 }
diff --git a/evalfocus.py b/evalfocus.py
index 5a43864..659c950 100755
--- a/evalfocus.py
+++ b/evalfocus.py
@@ -16,7 +16,7 @@
 SMALL_LS = 2400
 BIG_LS = 4800
 VISUAL_WAIT = 2000
-POWER_RANGE = 6
+HIST_DROP = 1.25
 MOUTH_DEDUCT = 0.75
 EYE_DEDUCT = 0.85
 FACE_DEDUCT = 0.9
@@ -66,7 +66,7 @@ def get_resize_factor(long_side) :
 ap.add_argument("-v", help = "verbose outputs", action = 'count', default = 0)
 ap.add_argument("-k", help = "laplacian kernel", type = int, choices = [1,3,5,7,9], default = 5)
 ap.add_argument("-d", help = "laplacian depth", type = int, choices = [8,16,32], default = 8)
-#ap.add_argument("-g", "--graph", help = "show histgram", action = 'store_true', default = False)
+ap.add_argument("-g", "--graph", help = "show histgram", action = 'store_true', default = False)
 ap.add_argument("-m", "--model", help = "model", default = "yunet.onnx")
 ap.add_argument("-sr", "--skip_resize", help = "skip resize", action = 'store_true', default = False)
 ap.add_argument("-lap", "--laplacian", help = "show laplacian", action = 'store_true', default = False)
@@ -170,12 +170,19 @@ def get_resize_factor(long_side) :
         cv.waitKey(VISUAL_WAIT)
     # Get result
     hist, bins = np.histogram(laplacian, bins = 32, range = (0,255))
-    # Compute the power
-    power = 0
     power_length = len(hist)
-    power_start = int(power_length - POWER_RANGE)
+
+    #determine power start
+    power_start = 0
+    for i in range(1, power_length - 1) :
+        if (hist[i] > 0 and (hist[i - 1] / hist[i]) < HIST_DROP) :
+            power_start = i
+            break
     if (verbose >= 3) : 
-        print("hist=", hist[ -1 * POWER_RANGE : ], end=", ")
+        print("power_start=", power_start)
+        print("hist=", hist[ -1 * (power_length - power_start) : ], end=", ")
+    # Compute the power
+    power = 0
     for i in range(power_start, power_length) :
         power += hist[i] * i