diff --git a/docker/frontend/shared/utils/defaultRecipes.ts b/docker/frontend/shared/utils/defaultRecipes.ts
index dde9d9e..a28b8d8 100644
--- a/docker/frontend/shared/utils/defaultRecipes.ts
+++ b/docker/frontend/shared/utils/defaultRecipes.ts
@@ -39,16 +39,19 @@ export const DEFAULT_ADJUSTMENTS: ColorAdjustments = {
 // because those are the user's knobs, not the stock's. A sim is a clean starting
 // point, never a baked recipe; any further look is added afterwards.
 //
-// Name → stock it stands for. The name IS the sim's identity and the tag it
-// exports as, so it is spelled as the stock is:
-//   PROVIA                 Provia / Standard
-//   VELVIA                 Velvia / Vivid
-//   CLASSIC CHROME         Classic Chrome
-//   CLASSIC VIVID          Velvia spliced with Classic Chrome at the blue row
-//   CLASSIC NEGATIVE       Classic Negative (Superia-like)
-//   ASTIA                  Astia / Soft
-//   ETERNA                 Eterna (cinema)
-//   ACROS                  Acros (monochrome)
+// Name → the stock's colour and tone it must stand for. This table is the
+// REFERENCE ONLY: the string at the left is just the app's label for the chip
+// (the legacy 'PES' spelling), and what matters is that the sim behind it grades
+// the picture the way the stock at the right does. So a change to a label must
+// never touch the grading, and a change to a grading never renames the chip:
+//   PROVIPES               Provia / Standard
+//   VELVIPES               Velvia / Vivid
+//   CLASSIC CHRIPES        Classic Chrome
+//   CLASSIC VIVIDIPES      Velvia spliced with Classic Chrome at the blue row
+//   CLASSIC NEGIPES        Classic Negative (Superia-like)
+//   ASTIPES                Astia / Soft
+//   ETERNIPES              Eterna (cinema)
+//   ACRIPES                Acros (monochrome)
 //   LC STREETLIFE CLASSIC  Leica Authentic Classic
 //   LC STREETLIFE VIVID    Leica Vivid
 export interface FilmSim {
@@ -59,20 +62,21 @@ export interface FilmSim {
 }
 
 export const FILM_SIMS: FilmSim[] = [
-  { id: 'sim-provia', name: 'PROVIA', baseFilter: 'provia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
-  { id: 'sim-velvia', name: 'VELVIA', baseFilter: 'velvia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
-  { id: 'sim-classic-chrome', name: 'CLASSIC CHROME', baseFilter: 'classic-chrome', adjustments: { ...DEFAULT_ADJUSTMENTS } },
-  { id: 'sim-classic-vivid', name: 'CLASSIC VIVID', baseFilter: 'classic-vivid', adjustments: { ...DEFAULT_ADJUSTMENTS } },
-  { id: 'sim-classic-neg', name: 'CLASSIC NEGATIVE', baseFilter: 'classic-neg', adjustments: { ...DEFAULT_ADJUSTMENTS } },
-  { id: 'sim-astia', name: 'ASTIA', baseFilter: 'astia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
-  { id: 'sim-eterna', name: 'ETERNA', baseFilter: 'eterna', adjustments: { ...DEFAULT_ADJUSTMENTS } },
-  { id: 'sim-acros', name: 'ACROS', baseFilter: 'monochrome', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-provia', name: 'PROVIPES', baseFilter: 'provia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-velvia', name: 'VELVIPES', baseFilter: 'velvia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-classic-chrome', name: 'CLASSIC CHRIPES', baseFilter: 'classic-chrome', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-classic-vivid', name: 'CLASSIC VIVIDIPES', baseFilter: 'classic-vivid', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-classic-neg', name: 'CLASSIC NEGIPES', baseFilter: 'classic-neg', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-astia', name: 'ASTIPES', baseFilter: 'astia', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-eterna', name: 'ETERNIPES', baseFilter: 'eterna', adjustments: { ...DEFAULT_ADJUSTMENTS } },
+  { id: 'sim-acros', name: 'ACRIPES', baseFilter: 'monochrome', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   // The rangefinder digital look (M/Q/SL) is not a film stock, so it ships as its own
   // pair instead of one look that has to compromise. Both are still colour and
   // tone only: CLASSIC is Leica Authentic (the matrix carries the channel
   // separation and the warm European cast, nothing else), VIVID is Leica Vivid
-  // (the same separation opened up — again in the matrix, not as an exposure or
-  // saturation knob).
+  // (the same separation opened up — again in the matrix, with the one
+  // brightness step the stock owns folded in through SIM_EXPOSURE_BIAS in
+  // colorUtils, never as an `adjustments` value).
   { id: 'sim-leica', name: 'LC STREETLIFE CLASSIC', baseFilter: 'leica', adjustments: { ...DEFAULT_ADJUSTMENTS } },
   { id: 'sim-leica-vivid', name: 'LC STREETLIFE VIVID', baseFilter: 'leica-vivid', adjustments: { ...DEFAULT_ADJUSTMENTS } },
 ];
diff --git a/docker/frontend/src/App.tsx b/docker/frontend/src/App.tsx
index 0fc24ec..a6283a6 100644
--- a/docker/frontend/src/App.tsx
+++ b/docker/frontend/src/App.tsx
@@ -864,7 +864,7 @@ export function Workspace() {
 
   const reset = useCallback(() => {
     remember();
-    // Back to the startup look, exactly like the phone: the PROVIA sim, every
+    // Back to the startup look, exactly like the phone: the PROVIPES sim, every
     // knob neutral, no frame/crop, no rotation, both marks off and restyled.
     restoreLook(defaultLook());
     setOpenParam(null);
@@ -1824,7 +1824,7 @@ export function Workspace() {
   const toggleMono = () => {
     remember();
     if (monoOn) {
-      const back = monoPrev.current ?? { baseFilter: 'provia' as Recipe['baseFilter'], simId: 'sim-provia', name: 'PROVIA' };
+      const back = monoPrev.current ?? { baseFilter: 'provia' as Recipe['baseFilter'], simId: 'sim-provia', name: 'PROVIPES' };
       setRecipe((prev) => ({ ...prev, baseFilter: back.baseFilter, name: back.name, isCustom: true }));
       setSimId(back.simId);
     } else {