Camera capturing taller image than previewed - ios

Question

There seems to be a number of questions about this issue here. Since most of them don’t provide code snippets, I am electing to show all my code. The problem: the picture taken is taller than the preview. My preview is w=288 by h=288; but the picture that is returned is w=2448 by h=3264. Why is the returned image not a square when my preview is a square?
AVCaptureSession *session;
AVCaptureStillImageOutput *stillImageOutput;
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
session=[[AVCaptureSession alloc]init];
[session setSessionPreset:AVCaptureSessionPresetPhoto];
AVCaptureDevice *inputDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError *error;
AVCaptureDeviceInput *deviceInput = [AVCaptureDeviceInput deviceInputWithDevice:inputDevice error:&error];
if ([session canAddInput:deviceInput]) {
[session addInput:deviceInput];
}
AVCaptureVideoPreviewLayer * previewLayout = [[AVCaptureVideoPreviewLayer alloc]initWithSession:session];
[previewLayout setVideoGravity:AVLayerVideoGravityResizeAspectFill];
CALayer *rootLayout =[[self view]layer];
[rootLayout setMasksToBounds:YES];
CGRect frame = self.frameForCapture.frame;
[previewLayout setFrame:frame];
[rootLayout insertSublayer:previewLayout atIndex:0];
stillImageOutput=[[AVCaptureStillImageOutput alloc]init];
NSDictionary *outputSettings =[[NSDictionary alloc]initWithObjectsAndKeys:AVVideoCodecJPEG, AVVideoCodecKey, nil];
[stillImageOutput setOutputSettings:outputSettings];
[session addOutput:stillImageOutput];
[session startRunning];
}
- (IBAction)takePhoto:(id)sender
{
AVCaptureConnection *videoConnection= nil;
for (AVCaptureConnection *connection in stillImageOutput.connections) {
for (AVCaptureInputPort *port in [connection inputPorts]) {
if ([[port mediaType] isEqual:AVMediaTypeVideo]) {
videoConnection=connection;
break;
}
}
if (videoConnection) {
break;
}
}
[stillImageOutput captureStillImageAsynchronouslyFromConnection:videoConnection
completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) {
if (imageDataSampleBuffer != NULL) {//I.E. it does exist
NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];
UIImage *originalImage =[UIImage imageWithData:imageData ];
NSLog(#"Image w = %f; h = %f",originalImage.size.width,originalImage.size.height);
CGSize size = self.frameForCapture.frame.size;
UIGraphicsBeginImageContext(size);
[originalImage drawInRect:CGRectMake(0,0,size.width,size.width)];
UIImage* image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
self.imageView.image=image;
[self.imageView setHidden:NO];
[self.frameForCapture setHidden:YES];
}
}];
}
I have been playing around with CGImageCreateWithImageInRect to get the preview to be what I finally save and use in my ImageView. But so far no luck. One of the places I have been looking is Cropping an UIImage. Any ideas how I might fix this issue?