acf image
<?php
$image = get_field('image');
if( $image ):
// Image variables.
$url = $image['url'];
$title = $image['title'];
$alt = $image['alt'];
$caption = $image['caption'];
// Thumbnail size attributes.
$size = 'thumbnail';
$thumb = $image['sizes'][ $size ];
$width = $image['sizes'][ $size . '-width' ];
$height = $image['sizes'][ $size . '-height' ];
// Begin caption wrap.
if( $caption ): ?>
<div class="wp-caption">
<?php endif; ?>
<a href="<?php echo esc_url($url); ?>" title="<?php echo esc_attr($title); ?>">
<img src="<?php echo esc_url($thumb); ?>" alt="<?php echo esc_attr($alt); ?>" />
</a>
<?php
// End caption wrap.
if( $caption ): ?>
<p class="wp-caption-text"><?php echo esc_html($caption); ?></p>
</div>
<?php endif; ?>
<?php endif; ?>