Just for be clear, this method is not what i'm looking for:
<img tal:define="scale context/@@images"
tal:replace="structure python: scale.scale('image', width=42, height=42).tag()" />
In fact this method resize an ImageField. I want to resize an Image object to a specific and exact resolution without ratio. Any way to do this ?
--edit--
The Image object for me is one of the items showed in portal_types on the ZMI. In a few words i want the same behaviour of the code above, but on Image type.
Cheers, Alessio