Image Getting w/ Genesis

genesis_get_image

  // Get the featured image and display it.  Note that the link is a lightbox URL.
    
    $img = genesis_get_image( array( 'format' => 'html', 'size' => 'medium', 'attr' => array( 'class' => 'alignleft post-image' ) ) );  
    
    $img_large = genesis_get_image( array( 'format' => 'html', 'size' => 'large', 
                'attr' => array( 'class' => 'lightbox', 'rel' => 'lightbox' ) ) );
    
    ?>
  <div id="book_cover_image" class="widget widget_image">
    <div class="widget-wrap">
    <div class="featured_image_widget">
      <div class="featured_image">
      <?php   printf( '<a href="#" title="%s">%s</a>', the_title_attribute('echo=0'), $img ); ?>
      </div>
      <div class="lightbox"><!-- Bigger Image Here ---></div>
    </div>
    </div>
  </div>

genesis_image

<span class="property-image">
    <?php genesis_image( array( 'format' => 'html', 'size' => 'medium') )?>
</span>

Notes

Genesis_image will return full HTML (it may not be what you are looking for).