[TYPO3] wt_gallery and watermark - poor quality

[Jogvan Olsen]

Hi List

I am using wt_gallery and trying to insert a logo as a watermark. It works 
fine, but the quality of the logo is poor.

In my localconf.php I have the following lines:
.
$TYPO3_CONF_VARS['GFX']['thumbnails_png'] = 1;
$TYPO3_CONF_VARS['GFX']['jpg_quality'] = '100';
$TYPO3_CONF_VARS['GFX']['png_truecolor'] = '1';
$TYPO3_CONF_VARS["GFX"]["gdlib_2"] = '1';
$TYPO3_CONF_VARS['GFX']['gdlib_png'] = '1';
.

And in Constanst I have these lines:
tx_wtgallery {
 config_singlepage {
  quality = 100
  watermark_pic = fileadmin/sys_images/logo_sort.png
  watermark_alpha = 30
 }
}


What am missing?


Thanks in advance
Jogvan Olsen