with modal

gistfile1.m

ProductView *prodView = (ProductView *)self.view; //Reference to view
    
    //create close button
    UIBarButtonItem *closeButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(closePopup)] autorelease];
    
    //image from the product
    UIImageView *imageView = [[UIImageView alloc] initWithImage:[[prodView prodImage] backgroundImageForState:UIControlStateNormal]];
    imageView.contentMode = UIViewContentModeScaleAspectFit;
    imageView.contentScaleFactor = .8;
    
    //view Controller for image in popup
    UIViewController *imageViewController = [[UIViewController new] autorelease];
    [imageViewController setTitle:[prodView.titleLabel text]]; //button title
    imageViewController.navigationItem.leftBarButtonItem = closeButton; //add button to controller
    imageViewController.contentSizeForViewInPopover = CGSizeMake(imageView.image.size.width, imageView.image.size.height);
    
    //add image to view controller
    [imageViewController.view addSubview:imageView];
    [imageView release];
    
    //create nav controller for button
    UINavigationController *nc = [[[UINavigationController alloc] initWithRootViewController:imageViewController] autorelease];
    nc.modalInPopover = TRUE;
    nc.modalPresentationStyle = UIModalPresentationFullScreen;
    nc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    
    [self presentModalViewController:nc animated:YES];
    
    /*
    //create popup controller init with nav controller
    popController = [[UIPopoverController alloc] initWithContentViewController:nc];

    //make visible or dismiss and release mem
    if (![popController isPopoverVisible]) {
    [popController presentPopoverFromRect:CGRectMake(0, 0, 0, 0) inView:self.view.superview permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

    }else{
     [popController dismissPopoverAnimated:YES];
     [popController release];
    }
     */