diff --git a/config.cpp b/config.cpp
index 038c2ed2..9b9e784f 100644
--- a/config.cpp
+++ b/config.cpp
@@ -1221,7 +1221,7 @@ void showStereo() {
       dialog::editNumber(vid.ipd, -10, 10, 0.01, 0, XLAT("pupillary distance"),
         help3 + 
         XLAT("The distance between your eyes in the represented 3D object. This is given in absolute units.")
-        );
+        ), dialog::scaleSinh100();
       
     else if(uni == 'd' && vid.stereo_mode == sAnaglyph)
       dialog::editNumber(vid.anaglyph_eyewidth, -1, 1, 0.01, 0, XLAT("distance between images"),
diff --git a/hyper.h b/hyper.h
index c0a68d10..9ae360e3 100644
--- a/hyper.h
+++ b/hyper.h
@@ -1937,6 +1937,7 @@ namespace dialog {
   const static scaler identity = {identity_f, identity_f, false};
   const static scaler logarithmic = {log, exp, true};
   const static scaler asinhic = {asinh, sinh, false};
+  const static scaler asinhic100 = {[] (ld x) { return asinh(x*100); }, [] (ld x) { return sinh(x)/100; }, false};
  
   struct numberEditor {
     ld *editwhat;
@@ -1981,6 +1982,7 @@ namespace dialog {
   void use_hexeditor();
   inline void scaleLog() { ne.sc = logarithmic; }
   inline void scaleSinh() { ne.sc = asinhic; }
+  inline void scaleSinh100() { ne.sc = asinhic100; }
   void bound_low(ld val);
   void bound_up(ld val);