Problem solve:
Edit: wp-content/plugins/nextgen-gallery/view/imagebrowser.php
Paste this code:
<?php
/**
Template Page for the image browser
Follow variables are useable :
$image : Contain all about the image
$meta : Contain the raw Meta data from the image
$exif : Contain the clean up Exif data
$iptc : Contain the clean up IPTC data
$xmp : Contain the clean up XMP data
You can check the content when you insert the tag <?php var_dump($variable) ?>
If you would like to show the timestamp of the image ,you can use <?php echo $exif['created_timestamp'] ?>
**/
?>
<?php if (!defined ('ABSPATH')) die ('No direct access allowed'); ?><?php if (!empty ($image)) : ?>
<div class="ngg-imagebrowser" id="<?php echo $image->anchor ?>">
<a>anchor ?>"/>
<h3><?php echo $image->alttext ?></h3>
<div class="pic"><?php echo $image->href_link ?></div>
<div class="ngg-imagebrowser-nav">
<div class="back">
</a><a>previous_pid ?>" href="<?php echo $image->previous_image_link ?>#<?php echo $image->anchor ?>"><?php _e('Back', 'nggallery') ?></a>
</div>
<div class="next">
<a>next_pid ?>" href="<?php echo $image->next_image_link ?>#<?php echo $image->anchor ?>"><?php _e('Next', 'nggallery') ?></a>
</div>
<div class="counter"><?php _e('Picture', 'nggallery') ?> <?php echo $image->number ?> <?php _e('of', 'nggallery')?> <?php echo $image->total ?></div>
<div class="ngg-imagebrowser-desc"><p><?php echo $image->description ?></p></div>
</div>
</div>
<?php endif; ?>
