[iPhone Dev] Camera Capture Flash

// Capture Flash

UIView *flashView = [[UIView alloc] initWithFrame:[self._videoPreviewLayer frame]];

[flashView setBackgroundColor:[UIColor blackColor]];

[flashView setAlpha:0.f];

[[[self view] window] addSubview:flashView];

[UIView animateWithDuration:.4f

                 animations:^{

                     [flashView setAlpha:1.f];

                     [flashView setAlpha:0.f];

                 }

                 completion:^(BOOL finished){

                     [flashView removeFromSuperview];

                     [flashView release];

                 }

];