[Typo3] Macina banners and ImageMagick 5.4

[tapio]

Hi

When ImageMagick is enabled Macina banners runs image throgh it => 
horrible bad looking PNG and JPG images!
The author said that if I don't set width it doesn't use ImageMagick
but at least 596x194 size image go through it.
It used to image saved in temp-folder of Typo3
How I could prevent Macina Banners to use ImageMagick?

Tapio Markula