CGRect screenRect = [[UIScreen mainScreen] bounds];

// create camera with standard settings
self.camera = [[LLSimpleCamera alloc] init];

// camera with video recording capability
self.camera =  [[LLSimpleCamera alloc] initWithVideoEnabled:YES];

// camera with precise quality, position and video parameters.
self.camera = [[LLSimpleCamera alloc] initWithQuality:AVCaptureSessionPresetHigh
                                             position:LLCameraPositionRear
                                         videoEnabled:YES];
// attach to the view
[self.camera attachToViewController:self withFrame:CGRectMake(0, 0, screenRect.size.width, screenRect.size.height)];

// capture
[self.camera capture:^(LLSimpleCamera *camera, UIImage *image, NSDictionary *metadata, NSError *error) {
    if(!error) {    
        // we should stop the camera, since we don't need it anymore. We will open a new vc.
        // this very important, otherwise you may experience memory crashes
        [camera stop];

        // show the image
        ImageViewController *imageVC = [[ImageViewController alloc] initWithImage:image];
        [self presentViewController:imageVC animated:NO completion:nil];
       }
}];

// start recording
NSURL *outputURL = [[[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"test1"] URLByAppendingPathExtension:@"mov"];
[self.camera startRecordingWithOutputUrl:outputURL didRecord:^(LLSimpleCamera *camera, NSURL *outputFileUrl, NSError *error) {
    VideoViewController *vc = [[VideoViewController alloc] initWithVideoUrl:outputFileUrl];
    [self.navigationController pushViewController:vc animated:YES];
}];

[self.camera stopRecording];

- (void)alterFocusBox:(CALayer *)layer animation:(CAAnimation *)animation;