How to get UIImage coordinates from UITapGestureRecognizer in an enlarged image?

I have a UIScrollView and inside it there is a UIImageView with an image. I would like to be able to scale and still get the UIImage coordinates. My image has more coordinates than the iPhone 600x800, and using the current method, I get the coordinates only on the iPhone. How can I get the coordinates of the actual location on the UIImage that was used?

This is what I still have:

- (void) loadView {

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];
tapGesture.numberOfTapsRequired = 1;
tapGesture.numberOfTouchesRequired = 1;


UIImage *mapImage = [UIImage imageNamed:@"Map1.png"];
imageV = [[UIImageView alloc] initWithImage:mapImage];
//imageV.userInteractionEnabled = YES;

//[imageV addGestureRecognizer:tapGesture];

//CGRect appFrame = [[UIScreen mainScreen] applicationFrame];
scrollV = [[UIScrollView alloc] initWithFrame:imageV.frame];
scrollV.contentSize = CGSizeMake(imageV.frame.size.width, imageV.frame.size.height);

[scrollV addGestureRecognizer:tapGesture];

[scrollV addSubview:imageV];
scrollV.userInteractionEnabled = YES;
scrollV.maximumZoomScale = 5;
scrollV.minimumZoomScale = 0.5;
scrollV.bounces = NO;
scrollV.bouncesZoom = NO;
scrollV.delegate = self;

self.view = scrollV;

}



-(void)tapDetected:(UIGestureRecognizer*)recognizer{
NSLog(@"tap detected.");
CGPoint point = [recognizer locationInView:nil];

NSLog(@"x = %f y = %f", point.x, point.y );
}

-(UIView*) viewForZoomingInScrollView:(UIScrollView *)scrollView {
return [[self.view subviews] objectAtIndex:0];
}