Thanks for this John, I worked this in nicely to an image slider using the Gallery field:
<div class="page-block-right slide-nav-section">
<?php
$images = get_field('gallery');
$size = 'large';
if( $images ): ?>
<?php foreach( $images as $image_id ): ?>
<input type="radio" id="<?php echo $image_id;?>" name="slider" <?php
if ($count == 0) {
echo 'checked';
}
?> >
<label for="<?php echo $image_id;?>"></label>
<div class="slide bg4"><?php echo wp_get_attachment_image( $image_id, $size ); ?></div>
<?php $count++; ?>
<?php endforeach; ?>
<?php endif; ?>
</div>
