Cloud Zoom display issue

Hi everyone,

I have installed Cloud Zoom (http://www.opencart.com/index.php?route ... on_id=4455) on an Open Cart (in Joomla).
It actually works well, but one thing I don't get anywhere with: the zoom does not actually, like on the pictures, increase the size of the product images, but just seems to copy the picture into the zoom view 1:1 - when I compare my view with the one on the pictures, I see that my zoom lens is 100% height and the zoom view has the same height. Which doesn't really make sense, the lens should be smaller. I have played around with some variables in the javascript but didn't really find a solution.

Does anyone know how I can achieve a real zoom?

I add a screenshot to show the problem.
The zoom view window is the transparent one, this happens when I do a screenshot, please ignore that...

Thanks for any hints...
Terry

I think u need to change the Product Image Pop Up to something bigger in your System->Setting-> Image