Get the_field of Advanced Custom Fields in a custom query

I have a custom query to display content of a certain template:

<?php
    $i = 0;
    $pages = get_pages(array(
        'meta_key' => '_wp_page_template',
        'meta_value' => 'sale.php'
    ));
    foreach($pages as $page){
        echo '<div class="content_'. $i .'">' . apply_filters( 'the_content', $page->post_content ) . '</div>';
        echo '<div class="title_' . $i . '">' . apply_filters( 'the_title', $page->post_title) . '</div>';
        echo '<p>' . the_field('sale_images_url') . '</p>';
        $i++;
    }
?>

which works fine for the_content() and the_title() so far. Want I also wanna do is, to display the value of an Advanced Custom Field named sale_images_url.

But it displays nothing. Do I have to handle this different?

Thanks