diff --git a/CHANGELOG.md b/CHANGELOG.md
index 55d000f..eaa639c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,32 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 Releases up to and including v0.9.2 are documented in the
 [GitHub releases](https://github.com/ralksta/immich-folio/releases).
 
+## [0.20.1] — 2026-10-04
+
+### Changed
+
+- **A single click zooms the lightbox photo in by 1.5×**
+  ([#835](https://github.com/ralksta/immich-folio/pull/835)). The first
+  version of zoom needed a double-click and went straight to 1:1, which was
+  more than visitors wanted when they only wanted a closer look. A click now
+  zooms to 1.5× around the cursor and a second click returns to fit. A press
+  that moves more than 10 px or is held longer than half a second is a pan, so
+  dragging a zoomed photo no longer drops out of the zoom. Ctrl and wheel,
+  pinch, touch double-tap, the magnifier button (still 1:1) and `+`, `-`, `0`
+  and `Esc` work as before.
+
+### Fixed
+
+- **Photo zoom and originals download need the `asset.download` permission**
+  on the Immich API key, which the setup guide never said. Zoom into a JPEG or
+  AVIF, the single download and both ZIPs stream `/assets/:id/original`, and
+  Immich answers `403` to a key that only has `asset.read` and `asset.view`.
+  The README permission table (which also credited `asset.read` with
+  originals), the photo zoom and originals download sections of the gallery
+  guide and the setup wizard hint now name it, and the log says so when a
+  `403` hits an original. Nothing changes for a site that uses neither
+  feature. Reported by a user who had to widen their key after enabling zoom.
+
 ## [0.20.0] — 2026-10-02
 
 ### Security
diff --git a/README.md b/README.md
index 06d2413..18afd88 100644
--- a/README.md
+++ b/README.md
@@ -237,11 +237,14 @@ PROOFING_WEBHOOK_URL=https://…         # notify on submitted client proofing s
 
 Create a dedicated API key in Immich under **Account Settings → API Keys**. Immich Folio only needs **read access** — it never modifies your library.
 
-| Permission   | Required | Used for                                                             |
-| ------------ | -------- | -------------------------------------------------------------------- |
-| `album.read` | ✅ Yes   | List and fetch album metadata & photo lists                          |
-| `asset.read` | ✅ Yes   | Fetch asset metadata, EXIF data, thumbnails, previews, and originals |
-| `asset.view` | ✅ Yes   | Stream image/video files (thumbnail, preview, video playback)        |
+| Permission       | Required                    | Used for                                                                                                                                           |
+| ---------------- | --------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `album.read`     | ✅ Yes                      | List and fetch album metadata & photo lists                                                                                                        |
+| `asset.read`     | ✅ Yes                      | Fetch asset metadata, EXIF data and search results                                                                                                 |
+| `asset.view`     | ✅ Yes                      | Stream image/video files (thumbnail, preview, video playback)                                                                                      |
+| `asset.download` | Only for zoom and downloads | Stream originals: [photo zoom](docs/gallery-config.md#photo-zoom) on JPEG/AVIF and [originals download](docs/gallery-config.md#originals-download) |
+
+> **Zoom and downloads need `asset.download`.** Without it Immich answers `403` for the original file, so the zoom button reports that full resolution is unavailable and downloads fail. Leave it off if you use neither feature.
 
 > **No write permissions needed.** `album.create`, `asset.upload`, `asset.delete`, etc. can all be left **off**.
 
@@ -347,7 +350,7 @@ own password, separate from any album passwords, and writes straight to
 
 v0.20.0 — zoom, five new presets and photos as you edited them:
 
-- **1:1 zoom in the lightbox** — double-click, pinch or press `+` to see a photo at full resolution and judge its sharpness; off by default, switched on for the site, a page or a single album ([guide](docs/gallery-config.md#photo-zoom))
+- **1:1 zoom in the lightbox** — click, pinch, Ctrl + scroll or press `+` to see a photo at full resolution and judge its sharpness; off by default, switched on for the site, a page or a single album ([guide](docs/gallery-config.md#photo-zoom))
 - **Five new theme presets** — Kunsthalle (a grey gallery wall with numbered wall labels), Ma, Cyanotype, Salon and Birch, each in dark and light; the passepartout mat of Studio, Classic and Noir is finally visible too
 - **Edits made in Immich show up** — crops and rotations from Immich's editor appear in the grid, the lightbox, share images and downloads
 - **No GPS in downloads** — original downloads and ZIPs keep camera data and colour profile but lose the coordinates and sub-city place names ([advisory](https://github.com/ralksta/immich-folio/security/advisories/GHSA-g4xf-4285-4cv4))
diff --git a/app/install/InstallWizard.tsx b/app/install/InstallWizard.tsx
index c8a1a7f..f9ed629 100644
--- a/app/install/InstallWizard.tsx
+++ b/app/install/InstallWizard.tsx
@@ -238,7 +238,9 @@ export function InstallWizard({ initialApiUrl, setupToken }: Props) {
                     disabled={testing}
                   />
                   <p className="admin-hint">
-                    Create one in Immich under Admin Settings → API Keys.
+                    Create one in Immich under Account Settings → API Keys. It needs album.read,
+                    asset.read and asset.view, plus asset.download if you want photo zoom or
+                    original downloads.
                   </p>
                 </div>
 
diff --git a/components/__tests__/LightboxZoom.test.tsx b/components/__tests__/LightboxZoom.test.tsx
index 60d7148..05c64d8 100644
--- a/components/__tests__/LightboxZoom.test.tsx
+++ b/components/__tests__/LightboxZoom.test.tsx
@@ -7,7 +7,7 @@ import type { PhotoItem } from '@/app/[...path]/PhotoGrid';
 
 /**
  * The lightbox zoom (#467), wired up: the control, the keys, Esc order,
- * double-click, swipe while zoomed, and that the full-resolution file is
+ * mouse click and pan, swipe while zoomed, and that the full-resolution file is
  * requested only when the visitor zooms.
  *
  * jsdom does no layout, so the fit box is stubbed: every image is laid out at
@@ -229,14 +229,44 @@ describe('keys', () => {
 });
 
 describe('gestures', () => {
-  it('double-click goes to 1:1 around the cursor, and back', () => {
+  /** A mouse press at a point, released `moveBy` px further on. */
+  const press = (surface: HTMLElement, x: number, y: number, moveBy = 0) => {
+    const at = { pointerId: 1, pointerType: 'mouse', button: 0, clientY: y };
+    fireEvent.pointerDown(surface, { ...at, clientX: x });
+    if (moveBy) fireEvent.pointerMove(surface, { ...at, clientX: x + moveBy });
+    fireEvent.pointerUp(surface, { ...at, clientX: x + moveBy });
+  };
+
+  it('a click on the photo zooms in by half around the cursor, and back', () => {
+    render(<Harness assets={[ZOOMABLE]} />);
+    const surface = preview().parentElement!;
+    press(surface, 600, 300);
+    // Fit box centre (500, 300); the cursor 100px right of it stays put at
+    // 1.5×, and the top edge is clamped to the 768px jsdom viewport.
+    expect(preview().style.transform).toBe('translate3d(-50px, 18px, 0) scale(1.5)');
+    press(surface, 600, 300);
+    expect(preview().style.transform).toContain('scale(1)');
+  });
+
+  it('a drag pans the zoomed photo instead of leaving the zoom', () => {
+    render(<Harness assets={[ZOOMABLE]} />);
+    const surface = preview().parentElement!;
+    press(surface, 600, 300);
+    press(surface, 600, 300, 100);
+    expect(preview().style.transform).toBe('translate3d(50px, 18px, 0) scale(1.5)');
+  });
+
+  it('a click beside the photo does not zoom', () => {
+    render(<Harness assets={[ZOOMABLE]} />);
+    press(preview().parentElement!, 1010, 300);
+    expect(preview().style.transform).toBe('');
+  });
+
+  it('the dblclick event itself no longer zooms', () => {
     render(<Harness assets={[ZOOMABLE]} />);
     const surface = preview().parentElement!;
     fireEvent.doubleClick(surface, { clientX: 600, clientY: 300 });
-    // Fit box centre (500, 300); the cursor 100px right of it stays put at 6×.
-    expect(preview().style.transform).toBe('translate3d(-500px, 0px, 0) scale(6)');
-    fireEvent.doubleClick(surface, { clientX: 600, clientY: 300 });
-    expect(preview().style.transform).toContain('scale(1)');
+    expect(preview().style.transform).toBe('');
   });
 
   it('no swipe navigation while zoomed', () => {
diff --git a/docs/gallery-config.md b/docs/gallery-config.md
index 7bdc282..d21fae3 100644
--- a/docs/gallery-config.md
+++ b/docs/gallery-config.md
@@ -262,6 +262,9 @@ albums:
       download: true
 ```
 
+The API key needs the `asset.download` permission in Immich, since originals
+are streamed from `/assets/:id/original`.
+
 Once enabled, visitors get a **Download album** link in the album header (every
 original as a ZIP), and — where [client proofing](#client-proofing) is on — a
 **Download selected (.zip)** action in the export dialog that zips just the
@@ -762,13 +765,15 @@ In the admin panel the switch is under **Settings › General › Portfolio
 Features**, and the page and album drawers in the page builder have an
 _Inherit / On / Off_ choice.
 
-**Using it.** Double-click (or double-tap) zooms to 1:1 around the point
-clicked and back to fit; so does the magnifier button in the lightbox bar.
-Pinch, or Ctrl + scroll wheel / trackpad pinch, zooms continuously between fit
-and 1:1 — never further, since enlarging past 1:1 only interpolates pixels and
-makes good focus look soft. Drag (or one finger) pans; `+` / `-` step, `0` and
-`Esc` go back to fit (a second `Esc` closes the viewer). Swiping to the next
-photo is off while zoomed, and changing photos resets the zoom.
+**Using it.** A click on the photo zooms in by half (1.5× the fit size)
+around the point clicked, and a second click goes back to fit. Double-tap on a
+touch screen, or the magnifier button in the lightbox bar, zooms straight to
+1:1 and back. Pinch, or Ctrl + scroll wheel / trackpad pinch, zooms
+continuously between fit and 1:1 — never further, since enlarging past 1:1
+only interpolates pixels and makes good focus look soft. Drag (or one finger)
+pans; `+` / `-` step, `0` and `Esc` go back to fit (a second `Esc` closes the
+viewer). Swiping to the next photo is off while zoomed, and changing photos
+resets the zoom.
 
 **What is shown.** The full-resolution file is requested only when a visitor
 zooms — never on opening the viewer, and never for the neighbouring photos.
@@ -788,6 +793,13 @@ GPS coordinates and place names below city level are overwritten in place;
 camera data and colour profile stay. A file whose metadata cannot be read is
 refused rather than sent.
 
+Zoom into a JPEG or AVIF streams the original from Immich, so the API key
+needs the `asset.download` permission (_Account Settings › API Keys_). With
+only `asset.read` and `asset.view`, Immich answers `403` and the lightbox says
+full resolution is unavailable; the Folio log shows
+`Failed to stream … 403`. The same permission covers
+[originals download](#originals-download).
+
 Formats a browser cannot display need Immich's **full-size preview**
 (_Administration › Settings › Image Settings › Full-size image_, JPEG format).
 Immich generates it only while that setting is on, so turn it on and run the
diff --git a/hooks/useZoom.ts b/hooks/useZoom.ts
index 68eaa4b..4c4cbad 100644
--- a/hooks/useZoom.ts
+++ b/hooks/useZoom.ts
@@ -18,11 +18,13 @@
 
 import { useCallback, useEffect, useRef, useState, type RefObject } from 'react';
 import {
+  CLICK_ZOOM_SCALE,
   FIT_VIEW,
   canZoom,
   clampView,
   isZoomed,
   maxZoomScale,
+  onFitBox,
   panBy,
   pinchView,
   stepView,
@@ -61,6 +63,8 @@ const DOUBLE_TAP_MS = 300;
 const DOUBLE_TAP_PX = 30;
 /** A pointer that moved further than this was a drag, not a tap. */
 const TAP_SLOP_PX = 10;
+/** A mouse press held longer than this was not a click. */
+const CLICK_MS = 500;
 /** The `+` / `-` step. */
 const KEY_STEP = 2;
 /** Wheel delta per e-fold of zoom; see onWheel. */
@@ -163,6 +167,26 @@ export function useZoom({ photoKey, naturalWidth, imageRef, surface }: UseZoomOp
     [apply, usable],
   );
 
+  /**
+   * A mouse click: on the photo at fit, a closer look around the cursor;
+   * anywhere while zoomed, back to fit. A click beside the photo does nothing.
+   */
+  const click = useCallback(
+    (point: Point) => {
+      if (isZoomed(viewRef.current)) {
+        apply(FIT_VIEW, true);
+        return;
+      }
+      const m = usable();
+      if (!m || !onFitBox(point, m.fit)) return;
+      apply(
+        toggleView(viewRef.current, point, m.fit, m.viewport, m.maxScale, CLICK_ZOOM_SCALE),
+        true,
+      );
+    },
+    [apply, usable],
+  );
+
   const step = useCallback(
     (factor: number) => {
       const m = usable();
@@ -231,7 +255,6 @@ export function useZoom({ photoKey, naturalWidth, imageRef, surface }: UseZoomOp
     /** Two fingers were down at some point of the current touch sequence. */
     let multi = false;
     let lastTap: { t: number; x: number; y: number } | null = null;
-    let lastPointerType = '';
 
     const midAndDistance = () => {
       const [a, b] = [...pointers.values()];
@@ -246,7 +269,6 @@ export function useZoom({ photoKey, naturalWidth, imageRef, surface }: UseZoomOp
     };
 
     const onPointerDown = (e: PointerEvent) => {
-      lastPointerType = e.pointerType;
       if (e.pointerType === 'mouse' && e.button !== 0) return;
       if (statusRef.current === 'failed') return;
       const at = { x: e.clientX, y: e.clientY };
@@ -329,6 +351,19 @@ export function useZoom({ photoKey, naturalWidth, imageRef, surface }: UseZoomOp
         gesture = { kind: 'none' };
       }
 
+      // A mouse press that neither moved nor lingered is a click; one that
+      // moved was a pan and leaves the view where the pan put it.
+      const wasClick =
+        e.type === 'pointerup' &&
+        e.pointerType === 'mouse' &&
+        down &&
+        !down.moved &&
+        e.timeStamp - down.t < CLICK_MS;
+      if (wasClick) {
+        click({ x: e.clientX, y: e.clientY });
+        return;
+      }
+
       const wasTap =
         e.type === 'pointerup' &&
         e.pointerType !== 'mouse' &&
@@ -352,14 +387,6 @@ export function useZoom({ photoKey, naturalWidth, imageRef, surface }: UseZoomOp
       }
     };
 
-    // Mouse only: touch has its own double-tap above, and some browsers also
-    // synthesise a dblclick from it, which would toggle straight back.
-    const onDoubleClick = (e: MouseEvent) => {
-      if (lastPointerType && lastPointerType !== 'mouse') return;
-      e.preventDefault();
-      toggle({ x: e.clientX, y: e.clientY });
-    };
-
     // Ctrl+wheel is how Chrome, Firefox and Edge report a trackpad pinch (and
     // what a mouse user presses to zoom); a plain wheel pans once zoomed.
     const onWheel = (e: WheelEvent) => {
@@ -435,7 +462,6 @@ export function useZoom({ photoKey, naturalWidth, imageRef, surface }: UseZoomOp
     surface.addEventListener('pointermove', onPointerMove);
     surface.addEventListener('pointerup', onPointerEnd);
     surface.addEventListener('pointercancel', onPointerEnd);
-    surface.addEventListener('dblclick', onDoubleClick);
     surface.addEventListener('wheel', onWheel, { passive: false });
     surface.addEventListener('gesturestart', onGestureStart);
     surface.addEventListener('gesturechange', onGestureChange);
@@ -445,13 +471,12 @@ export function useZoom({ photoKey, naturalWidth, imageRef, surface }: UseZoomOp
       surface.removeEventListener('pointermove', onPointerMove);
       surface.removeEventListener('pointerup', onPointerEnd);
       surface.removeEventListener('pointercancel', onPointerEnd);
-      surface.removeEventListener('dblclick', onDoubleClick);
       surface.removeEventListener('wheel', onWheel);
       surface.removeEventListener('gesturestart', onGestureStart);
       surface.removeEventListener('gesturechange', onGestureChange);
       surface.removeEventListener('gestureend', onGestureEnd);
     };
-  }, [enabled, photoKey, surface, measure, apply, toggle]);
+  }, [enabled, photoKey, surface, measure, apply, toggle, click]);
 
   const zoomed = isZoomed(view);
   /** The full-resolution image is in the page (requested, loading or shown). */
diff --git a/lib/__tests__/zoom.test.ts b/lib/__tests__/zoom.test.ts
index 340a84c..a3133e2 100644
--- a/lib/__tests__/zoom.test.ts
+++ b/lib/__tests__/zoom.test.ts
@@ -1,11 +1,13 @@
 import { describe, it, expect } from 'vitest';
 import {
+  CLICK_ZOOM_SCALE,
   FIT_VIEW,
   canZoom,
   clampView,
   isZoomed,
   maxZoomScale,
   oneToOneScale,
+  onFitBox,
   panBy,
   pinchView,
   stepView,
@@ -127,7 +129,26 @@ describe('zooming around a point', () => {
     expect(fit.cx + next.x - (fit.width * 6) / 2).toBeCloseTo(0);
   });
 
-  it('double-click goes to 1:1 at the point, and back to fit', () => {
+  it('toggles to a given scale at the point, clamped to 1:1', () => {
+    const point = { x: 650, y: 420 };
+    const closer = toggleView(FIT_VIEW, point, fit, viewport, max, CLICK_ZOOM_SCALE);
+    expect(closer.scale).toBe(1.5);
+    const after = screenOf(closer, point.x - fit.cx, point.y - fit.cy);
+    expect(after.x).toBeCloseTo(point.x);
+    expect(after.y).toBeCloseTo(point.y);
+    expect(toggleView(closer, point, fit, viewport, max, CLICK_ZOOM_SCALE)).toEqual(FIT_VIEW);
+    // A photo with less to give than the click asks for stops at 1:1.
+    expect(toggleView(FIT_VIEW, point, fit, viewport, 1.2, CLICK_ZOOM_SCALE).scale).toBe(1.2);
+  });
+
+  it('knows the photo from the band beside it', () => {
+    expect(onFitBox({ x: fit.cx, y: fit.cy }, fit)).toBe(true);
+    expect(onFitBox({ x: fit.cx + fit.width / 2, y: fit.cy }, fit)).toBe(true);
+    expect(onFitBox({ x: fit.cx + fit.width / 2 + 1, y: fit.cy }, fit)).toBe(false);
+    expect(onFitBox({ x: fit.cx, y: fit.cy - fit.height / 2 - 1 }, fit)).toBe(false);
+  });
+
+  it('double-tap and the button go to 1:1 at the point, and back to fit', () => {
     const point = { x: 650, y: 420 };
     const zoomed = toggleView(FIT_VIEW, point, fit, viewport, max);
     expect(zoomed.scale).toBe(max);
diff --git a/lib/i18n/locales/de.ts b/lib/i18n/locales/de.ts
index 326998d..1268e4b 100644
--- a/lib/i18n/locales/de.ts
+++ b/lib/i18n/locales/de.ts
@@ -187,7 +187,7 @@ export const de: Dictionary = {
     shortcutList: 'Diese Liste',
     shortcutClose: 'Ansicht schließen',
     zoomIn: 'Auf volle Auflösung zoomen',
-    zoomInTitle: 'Auf volle Auflösung zoomen (+ oder Doppelklick)',
+    zoomInTitle: 'Auf volle Auflösung zoomen (+)',
     zoomOut: 'Foto an den Bildschirm anpassen',
     zoomOutTitle: 'Einpassen (0 oder Esc)',
     zoomLoading: 'Volle Auflösung wird geladen …',
diff --git a/lib/i18n/locales/en.ts b/lib/i18n/locales/en.ts
index d281b6f..09a265d 100644
--- a/lib/i18n/locales/en.ts
+++ b/lib/i18n/locales/en.ts
@@ -191,7 +191,7 @@ export const en = {
     shortcutClose: 'Close the viewer',
     /** The zoom button (#467): to 1:1 from fit, and back. */
     zoomIn: 'Zoom to full resolution',
-    zoomInTitle: 'Zoom to full resolution (+ or double-click)',
+    zoomInTitle: 'Zoom to full resolution (+)',
     zoomOut: 'Fit the photo to the screen',
     zoomOutTitle: 'Fit to screen (0 or Esc)',
     zoomLoading: 'Loading full resolution…',
diff --git a/lib/i18n/locales/es.ts b/lib/i18n/locales/es.ts
index 44ba15d..cec61dc 100644
--- a/lib/i18n/locales/es.ts
+++ b/lib/i18n/locales/es.ts
@@ -187,7 +187,7 @@ export const es: Dictionary = {
     shortcutList: 'Esta lista',
     shortcutClose: 'Cerrar el visor',
     zoomIn: 'Ampliar a resolución completa',
-    zoomInTitle: 'Ampliar a resolución completa (+ o doble clic)',
+    zoomInTitle: 'Ampliar a resolución completa (+)',
     zoomOut: 'Ajustar la foto a la pantalla',
     zoomOutTitle: 'Ajustar a la pantalla (0 o Esc)',
     zoomLoading: 'Cargando la resolución completa…',
diff --git a/lib/i18n/locales/fr.ts b/lib/i18n/locales/fr.ts
index 49cb6ce..2761a36 100644
--- a/lib/i18n/locales/fr.ts
+++ b/lib/i18n/locales/fr.ts
@@ -190,7 +190,7 @@ export const fr: Dictionary = {
     shortcutList: 'Cette liste',
     shortcutClose: 'Fermer la visionneuse',
     zoomIn: 'Zoomer en pleine résolution',
-    zoomInTitle: 'Zoomer en pleine résolution (+ ou double-clic)',
+    zoomInTitle: 'Zoomer en pleine résolution (+)',
     zoomOut: 'Ajuster la photo à l’écran',
     zoomOutTitle: 'Ajuster à l’écran (0 ou Échap)',
     zoomLoading: 'Chargement de la pleine résolution…',
diff --git a/lib/i18n/locales/it.ts b/lib/i18n/locales/it.ts
index 70093f4..b6c81a1 100644
--- a/lib/i18n/locales/it.ts
+++ b/lib/i18n/locales/it.ts
@@ -187,7 +187,7 @@ export const it: Dictionary = {
     shortcutList: 'Questo elenco',
     shortcutClose: 'Chiudi il visualizzatore',
     zoomIn: 'Ingrandisci alla risoluzione piena',
-    zoomInTitle: 'Ingrandisci alla risoluzione piena (+ o doppio clic)',
+    zoomInTitle: 'Ingrandisci alla risoluzione piena (+)',
     zoomOut: 'Adatta la foto allo schermo',
     zoomOutTitle: 'Adatta allo schermo (0 o Esc)',
     zoomLoading: 'Caricamento della risoluzione piena…',
diff --git a/lib/i18n/locales/nl.ts b/lib/i18n/locales/nl.ts
index 530c19b..94e17b4 100644
--- a/lib/i18n/locales/nl.ts
+++ b/lib/i18n/locales/nl.ts
@@ -188,7 +188,7 @@ export const nl: Dictionary = {
     shortcutList: 'Deze lijst',
     shortcutClose: 'De viewer sluiten',
     zoomIn: 'Inzoomen op volledige resolutie',
-    zoomInTitle: 'Inzoomen op volledige resolutie (+ of dubbelklik)',
+    zoomInTitle: 'Inzoomen op volledige resolutie (+)',
     zoomOut: 'Foto aan het scherm aanpassen',
     zoomOutTitle: 'Aan scherm aanpassen (0 of Esc)',
     zoomLoading: 'Volledige resolutie laden…',
diff --git a/lib/immich.ts b/lib/immich.ts
index 877777a..edf01af 100644
--- a/lib/immich.ts
+++ b/lib/immich.ts
@@ -375,7 +375,12 @@ class ImmichClient {
       }
 
       if (!res.ok) {
-        console.error(`[Immich] Failed to stream ${assetId}: ${res.status}`);
+        console.error(
+          `[Immich] Failed to stream ${assetId}: ${res.status}` +
+            (res.status === 403 && endpoint.includes('/original')
+              ? ' (the API key probably lacks the asset.download permission)'
+              : ''),
+        );
         // Neither branch below reads the body — an unconsumed one keeps its
         // socket out of undici's pool until GC finalises it (#635).
         await res.body?.cancel();
diff --git a/lib/zoom.ts b/lib/zoom.ts
index 88acc93..41e108c 100644
--- a/lib/zoom.ts
+++ b/lib/zoom.ts
@@ -134,7 +134,7 @@ export function clampView(
 
 /**
  * Change the scale while the photo point under `point` stays under it — the
- * cursor for a wheel or a double-click, the midpoint of two fingers for a
+ * cursor for a wheel or a click, the midpoint of two fingers for a
  * pinch. Clamping can still move it at the edges, which is the price of never
  * showing an empty band.
  */
@@ -198,16 +198,34 @@ export function panBy(
   return clampView({ ...view, x: view.x + dx, y: view.y + dy }, fit, viewport, maxScale);
 }
 
-/** Double-click / double-tap: fit ↔ 1:1, around the point. */
+/**
+ * How far a mouse click zooms: half again the fit size, a closer look rather
+ * than the jump to 1:1, which on a large file is several times the screen.
+ * Ctrl + wheel goes the rest of the way.
+ */
+export const CLICK_ZOOM_SCALE = 1.5;
+
+/**
+ * Fit ↔ zoomed, around the point: to `target` (clamped to 1:1), or to 1:1
+ * itself without one — the double-tap and the magnifier button.
+ */
 export function toggleView(
   view: ZoomView,
   point: Point,
   fit: FitBox,
   viewport: Viewport,
   maxScale: number,
+  target: number = maxScale,
 ): ZoomView {
   if (isZoomed(view)) return { ...FIT_VIEW };
-  return zoomAround(view, maxScale, point, fit, viewport, maxScale);
+  return zoomAround(view, target, point, fit, viewport, maxScale);
+}
+
+/** Whether a point lies on the photo at fit — not on the band beside it. */
+export function onFitBox(point: Point, fit: FitBox): boolean {
+  return (
+    Math.abs(point.x - fit.cx) <= fit.width / 2 && Math.abs(point.y - fit.cy) <= fit.height / 2
+  );
 }
 
 /**
diff --git a/package-lock.json b/package-lock.json
index 578ef2c..7a7e33e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "immich-folio",
-  "version": "0.20.0",
+  "version": "0.20.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "immich-folio",
-      "version": "0.20.0",
+      "version": "0.20.1",
       "license": "MIT",
       "dependencies": {
         "@dnd-kit/core": "^6.3.1",
diff --git a/package.json b/package.json
index 145135c..9312c79 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "immich-folio",
-  "version": "0.20.0",
+  "version": "0.20.1",
   "license": "MIT",
   "scripts": {
     "dev": "next dev",