diff --git a/modules/videoio/include/opencv2/videoio/cap_ios.h b/modules/videoio/include/opencv2/videoio/cap_ios.h
index 9075fe1c80..13bf4b987c 100644
--- a/modules/videoio/include/opencv2/videoio/cap_ios.h
+++ b/modules/videoio/include/opencv2/videoio/cap_ios.h
@@ -133,7 +133,7 @@
 
 }
 
-@property (nonatomic, assign) id<CvVideoCameraDelegate> delegate;
+@property (nonatomic, weak) id<CvVideoCameraDelegate> delegate;
 @property (nonatomic, assign) BOOL grayscaleMode;
 
 @property (nonatomic, assign) BOOL recordVideo;
@@ -167,7 +167,7 @@
     AVCaptureStillImageOutput *stillImageOutput;
 }
 
-@property (nonatomic, assign) id<CvPhotoCameraDelegate> delegate;
+@property (nonatomic, weak) id<CvPhotoCameraDelegate> delegate;
 
 - (void)takePicture;
 
diff --git a/modules/videoio/src/cap_ios_photo_camera.mm b/modules/videoio/src/cap_ios_photo_camera.mm
index 8cf19226b6..9b44156efc 100644
--- a/modules/videoio/src/cap_ios_photo_camera.mm
+++ b/modules/videoio/src/cap_ios_photo_camera.mm
@@ -36,6 +36,9 @@
 
 
 @interface CvPhotoCamera ()
+{
+    id<CvPhotoCameraDelegate> _delegate;
+}
 
 @property (nonatomic, strong) AVCaptureStillImageOutput* stillImageOutput;
 
@@ -53,8 +56,14 @@
 #pragma mark Public
 
 @synthesize stillImageOutput;
-@synthesize delegate;
 
+- (void)setDelegate:(id<CvPhotoCameraDelegate>)newDelegate {
+    _delegate = newDelegate;
+}
+
+- (id<CvPhotoCameraDelegate>)delegate {
+    return _delegate;
+}
 
 #pragma mark - Public interface
 
@@ -106,9 +115,7 @@
                  cameraAvailable = YES;
 
                  NSLog(@"CvPhotoCamera captured image");
-                 if (self.delegate) {
-                     [self.delegate photoCamera:self capturedImage:newImage];
-                 }
+                 [self.delegate photoCamera:self capturedImage:newImage];
 
                  [self.captureSession startRunning];
              });
diff --git a/modules/videoio/src/cap_ios_video_camera.mm b/modules/videoio/src/cap_ios_video_camera.mm
index c1a0b4d774..c3704a1f44 100644
--- a/modules/videoio/src/cap_ios_video_camera.mm
+++ b/modules/videoio/src/cap_ios_video_camera.mm
@@ -61,11 +61,12 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;}
 
 
 @implementation CvVideoCamera
+{
+    id<CvVideoCameraDelegate> _delegate;
+}
 
 
 
-
-@synthesize delegate;
 @synthesize grayscaleMode;
 
 @synthesize customPreviewLayer;
@@ -78,7 +79,13 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;}
 @synthesize recordPixelBufferAdaptor;
 @synthesize recordAssetWriter;
 
+- (void)setDelegate:(id<CvVideoCameraDelegate>)newDelegate {
+    _delegate = newDelegate;
+}
 
+- (id<CvVideoCameraDelegate>)delegate {
+    return _delegate;
+}
 
 #pragma mark - Constructors
 
@@ -450,7 +457,8 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;}
 {
     (void)captureOutput;
     (void)connection;
-    if (self.delegate) {
+    auto strongDelegate = self.delegate;
+    if (strongDelegate) {
 
         // convert from Core Media to Core Video
         CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
@@ -492,8 +500,8 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;}
 
         CGImage* dstImage;
 
-        if ([self.delegate respondsToSelector:@selector(processImage:)]) {
-            [self.delegate processImage:image];
+        if ([strongDelegate respondsToSelector:@selector(processImage:)]) {
+            [strongDelegate processImage:image];
         }
 
         // check if matrix data pointer or dimensions were changed by the delegate