diff --git a/client/src/components/CameraModal.tsx b/client/src/components/CameraModal.tsx
index 9c5f29a..066874d 100644
--- a/client/src/components/CameraModal.tsx
+++ b/client/src/components/CameraModal.tsx
@@ -32,7 +32,7 @@ export default function CameraModal({
 
   return (
     <Dialog open={isOpen} onOpenChange={onClose}>
-      <DialogContent className="max-w-md">
+      <DialogContent className="max-w-lg w-full mx-auto">
         <DialogHeader>
           <DialogTitle>
             Photo {photoType ? photoType.charAt(0).toUpperCase() + photoType.slice(1) : ''}
@@ -46,20 +46,33 @@ export default function CameraModal({
               autoPlay
               playsInline
               muted
-              className="w-full camera-preview"
+              className="w-full max-w-full h-auto camera-preview rounded-lg border"
+              style={{ 
+                aspectRatio: '16/9',
+                objectFit: 'cover',
+                maxHeight: '400px'
+              }}
             />
             <canvas ref={canvasRef} className="hidden" />
+            
+            {/* Overlay pour aider à cadrer la pièce d'identité */}
+            <div className="absolute inset-0 pointer-events-none">
+              <div className="absolute inset-4 border-2 border-white border-dashed rounded-lg opacity-50"></div>
+              <div className="absolute bottom-2 left-2 text-white text-sm bg-black bg-opacity-50 px-2 py-1 rounded">
+                Cadrez la pièce d'identité dans le rectangle
+              </div>
+            </div>
           </div>
           
-          <div className="flex justify-end space-x-3">
-            <Button variant="outline" onClick={onClose}>
+          <div className="flex justify-between space-x-3">
+            <Button variant="outline" onClick={onClose} className="flex-1">
               <X className="h-4 w-4 mr-2" />
               Fermer
             </Button>
             <Button 
               onClick={onCapture} 
               disabled={isCapturing}
-              className="bg-primary hover:bg-primary/90"
+              className="bg-primary hover:bg-primary/90 flex-1"
             >
               <Camera className="h-4 w-4 mr-2" />
               {isCapturing ? 'Capture...' : 'Prendre la photo'}
diff --git a/client/src/components/NewSaleForm.tsx b/client/src/components/NewSaleForm.tsx
index a88148f..fb517d9 100644
--- a/client/src/components/NewSaleForm.tsx
+++ b/client/src/components/NewSaleForm.tsx
@@ -180,6 +180,16 @@ export default function NewSaleForm() {
 
   // Photo capture functions
   const handlePhotoCapture = async (photoType: PhotoType) => {
+    // Vérifier d'abord si les caméras sont supportées
+    if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
+      toast({
+        title: "Caméra non supportée",
+        description: "Votre navigateur ne supporte pas l'accès aux caméras",
+        variant: "destructive",
+      });
+      return;
+    }
+
     try {
       await startCamera(photoType);
     } catch (error) {
diff --git a/client/src/hooks/useCamera.tsx b/client/src/hooks/useCamera.tsx
index e9a2da3..fe824ac 100644
--- a/client/src/hooks/useCamera.tsx
+++ b/client/src/hooks/useCamera.tsx
@@ -12,9 +12,47 @@ export function useCamera() {
 
   const startCamera = useCallback(async (photoType: PhotoType) => {
     try {
-      const stream = await navigator.mediaDevices.getUserMedia({
-        video: { facingMode: 'environment' }
-      });
+      // Configuration avancée pour tablettes et appareils mobiles
+      const constraints = {
+        video: {
+          facingMode: 'environment', // Caméra arrière par défaut
+          width: { ideal: 1280, max: 1920 }, // Résolution optimale
+          height: { ideal: 720, max: 1080 },
+          aspectRatio: { ideal: 16/9 },
+          frameRate: { ideal: 30 }
+        }
+      };
+
+      let stream: MediaStream;
+      
+      try {
+        // Essai avec caméra arrière
+        stream = await navigator.mediaDevices.getUserMedia(constraints);
+      } catch (backCameraError) {
+        console.warn('Caméra arrière non disponible, essai avec caméra avant:', backCameraError);
+        
+        // Fallback vers caméra avant si arrière non disponible
+        const frontConstraints = {
+          video: {
+            facingMode: 'user',
+            width: { ideal: 1280, max: 1920 },
+            height: { ideal: 720, max: 1080 },
+            aspectRatio: { ideal: 16/9 },
+            frameRate: { ideal: 30 }
+          }
+        };
+        
+        try {
+          stream = await navigator.mediaDevices.getUserMedia(frontConstraints);
+        } catch (frontCameraError) {
+          console.warn('Caméra avant non disponible, essai basique:', frontCameraError);
+          
+          // Fallback minimal pour compatibilité maximale
+          stream = await navigator.mediaDevices.getUserMedia({
+            video: true
+          });
+        }
+      }
       
       streamRef.current = stream;
       setCurrentPhotoType(photoType);
@@ -27,7 +65,7 @@ export function useCamera() {
       return true;
     } catch (error) {
       console.error('Camera error:', error);
-      throw new Error('Impossible d\'accéder à la caméra');
+      throw new Error('Impossible d\'accéder à la caméra. Vérifiez les permissions et la disponibilité des caméras.');
     }
   }, []);
 
diff --git a/replit.md b/replit.md
index 995af3e..c3219a0 100644
--- a/replit.md
+++ b/replit.md
@@ -248,6 +248,18 @@ Preferred communication style: Simple, everyday language.
 - ✅ Modern, crisp appearance with 4px border-radius for cards, inputs, and buttons
 - ✅ White background for all input fields for better contrast and readability
 
+### Photo Capture System & Tablet Support (January 11, 2025)
+- ✅ Restored complete photo capture functionality for identity documents (recto/verso)
+- ✅ Added photo download capability from sales history modal with structured filenames
+- ✅ Enhanced camera support for tablets with advanced constraint handling
+- ✅ Multi-fallback camera system: environment → user → basic video for maximum compatibility
+- ✅ Optimized video resolution for tablets (1280x720 ideal, up to 1920x1080)
+- ✅ Added visual framing overlay to help users position identity documents correctly
+- ✅ Improved CameraModal with better responsive design for tablet screens
+- ✅ Enhanced error handling with device-specific camera availability checks
+- ✅ Camera permission detection and clear error messages for troubleshooting
+- ✅ Support for both front and rear cameras on tablets and mobile devices
+
 ### Docker Configuration & Cleanup (January 9, 2025)
 - ✅ Complete Docker setup optimized for external PostgreSQL database
 - ✅ Docker Compose configuration with RegisFlow application only