Ok, you are right. I actually cannot find any examples. HOWEVER – the reason why I have never had this problem before, was that the themes had a max width/ max height size on product listing. Thing is that some of my items are VERTICAL and some are horisontal. I tried and fix this by adding more white space on top of my product images. BUT as a result there was so much space on top on the product-page, that the user could not see the product image!
But if I just left the images un touched, it screw up the entire product-gallery/ product listing, and the products would not show on a nice line. Also, I wanted the max width to result in the image being placed center-center, just like they would if I hardcoded them in Photoshop.
Do you know what I mean??