Wordpress Comments for Attachment Images in Post Loop

Attachment-Image-Comments.php

<?php
//Place this within The Loop of post_parent ($post)
$args = array( 'post_type' => 'attachment',
                'numberposts' => -1,
                'post_parent' => $post->ID );

$attachments = new WP_query($args);

while ($attachments->have_posts()) :

    $attachments->the_post();

    echo wp_get_attachment_image( get_the_ID(), 'medium');

    comments_template();

endwhile;

?>