Danke, danke, danke Malte..... jetzt wäre ich doch fast eingegangen...
I was already in the "template-functions.php" making changes and I had a little bit success.
First I changed
changed the css
#imagemetadata { display: block }
so it is displayed anyway
Then in "image.php" added
<?php printImageMetaData(); ?>
Now I could see the "Image Info" Title which is clickable to toggle the Image Data
If there is no need for the toggle:
In "template-functions.php"
I changed in line 1993
$toggle=true
to false
And added a align=\"left\"
to the second td to get the righthand side listings aligned to the left.
...but this was too complicated.... your way is easier

, but I still have to change the "display" in the CSS