You know you feel stupid with you ask questions on a board that make you look stupid. This is one of those time.
I copied my image.php page from a previous build.
In it I using the caption called.
<?php // if ( !empty($post->post_excerpt) ) the_excerpt() ?>
Which called the caption as I wrote it.
But when I replaced it with the
<?php the_content();?>
It then gave me the description as I though I requested it.
The other thing is I didn’t have a excerpt in the main post. But yet it reverted to caption instead of being blank.
Regardless issue closed!