How to render a field above the node title using omega sub-theme
You might get a bit more luck using the field_view_field function:

function MYTHEME_preprocess_region(&amp;$vars) {
  $theme = alpha_get_theme();
  if ($vars['elements']['#region'] == 'content') {
    $node = $theme-&gt;page['node'];

    $vars['slideshow'] = field_view_field('node', $node, 'field_slideshow_images');
  }
}


And then use print render($slideshow); in your template file.

You might need to play with the 4th parameter to field_view_field() ($display) a bit if you have custom settings on your display for that field, but it should be a good place to start.