tweaked LanczosSharp blur value (minimizes the maximum deviation from perfect deviation for bounded purely vertical data)
diff --git a/magick/resize.c b/magick/resize.c
index 11c34d1..9eb279e 100644
--- a/magick/resize.c
+++ b/magick/resize.c
@@ -921,7 +921,7 @@
   switch (filter_type)
   {
     case LanczosSharpFilter:
-      resize_filter->blur *= 0.98303932214489908;
+      resize_filter->blur *= 0.9812505644269356;
       break;
     case Lanczos2SharpFilter:
       resize_filter->blur *= 0.958027803631219;