diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef65c121041a724cf0d981d36b268fb81603cfe1..8869441480405447c0a237008e35b3b673fe49d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ Note that since we don't clearly distinguish between a public and private interf
 ## [Unreleased]
 
 - Integration of Dual depth peeling - OIT method
+- Stereo camera improvements
+    - Fix param updates not applied
+    - Better param ranges and description
+    - Add timer.mark for left/right camera
 
 ## [v3.17.0] - 2022-09-11
 
diff --git a/src/mol-canvas3d/camera/stereo.ts b/src/mol-canvas3d/camera/stereo.ts
index 0111427191417c5e81137c60bff2f1144b38b560..4742dd93f1bdb4d8b69e6c866af6be6e7d3e4d44 100644
--- a/src/mol-canvas3d/camera/stereo.ts
+++ b/src/mol-canvas3d/camera/stereo.ts
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ * Copyright (c) 2020-2022 mol* contributors, licensed under MIT, See LICENSE file for more info.
  *
  * @author David Sehnal <david.sehnal@gmail.com>
  * @author Alexander Rose <alexander.rose@weirdbyte.de>
@@ -13,8 +13,8 @@ import { Camera, ICamera } from '../camera';
 import { Viewport } from './util';
 
 export const StereoCameraParams = {
-    eyeSeparation: PD.Numeric(0.064, { min: 0.01, max: 0.5, step: 0.001 }),
-    focus: PD.Numeric(10, { min: 1, max: 100, step: 0.01 }),
+    eyeSeparation: PD.Numeric(0.062, { min: 0.02, max: 0.1, step: 0.001 }, { description: 'Distance between left and right camera.' }),
+    focus: PD.Numeric(10, { min: 1, max: 20, step: 0.1 }, { description: 'Apparent object distance.' }),
 };
 export const DefaultStereoCameraProps = PD.getDefaultValues(StereoCameraParams);
 export type StereoCameraProps = PD.Values<typeof StereoCameraParams>
diff --git a/src/mol-canvas3d/canvas3d.ts b/src/mol-canvas3d/canvas3d.ts
index 834f86d161791fb968498b1a40a602fae4796ab3..24223dca18e018e7a326bfc59225cbb60879278d 100644
--- a/src/mol-canvas3d/canvas3d.ts
+++ b/src/mol-canvas3d/canvas3d.ts
@@ -826,7 +826,10 @@ namespace Canvas3D {
 
                 if (props.camera?.helper) helper.camera.setProps(props.camera.helper);
                 if (props.camera?.manualReset !== undefined) p.camera.manualReset = props.camera.manualReset;
-                if (props.camera?.stereo !== undefined) Object.assign(p.camera.stereo, props.camera.stereo);
+                if (props.camera?.stereo !== undefined) {
+                    Object.assign(p.camera.stereo, props.camera.stereo);
+                    stereoCamera.setProps(p.camera.stereo.params);
+                }
                 if (props.cameraResetDurationMs !== undefined) p.cameraResetDurationMs = props.cameraResetDurationMs;
                 if (props.transparentBackground !== undefined) p.transparentBackground = props.transparentBackground;
                 if (props.dpoitIterations !== undefined) p.dpoitIterations = props.dpoitIterations;
diff --git a/src/mol-canvas3d/passes/draw.ts b/src/mol-canvas3d/passes/draw.ts
index 747b500572ae636adfbfb30081295cd9bfcfecbf..b286e584036a1500a4b4b09c49658fccec204c42 100644
--- a/src/mol-canvas3d/passes/draw.ts
+++ b/src/mol-canvas3d/passes/draw.ts
@@ -390,8 +390,12 @@ export class DrawPass {
         renderer.setPixelRatio(this.webgl.pixelRatio);
 
         if (StereoCamera.is(camera)) {
+            if (isTimingMode) this.webgl.timer.mark('StereoCamera.left');
             this._render(renderer, camera.left, scene, helper, toDrawingBuffer, transparentBackground, props);
+            if (isTimingMode) this.webgl.timer.markEnd('StereoCamera.left');
+            if (isTimingMode) this.webgl.timer.mark('StereoCamera.right');
             this._render(renderer, camera.right, scene, helper, toDrawingBuffer, transparentBackground, props);
+            if (isTimingMode) this.webgl.timer.markEnd('StereoCamera.right');
         } else {
             this._render(renderer, camera, scene, helper, toDrawingBuffer, transparentBackground, props);
         }