Changing mouse behaviour in EOG
Wauzl, try to set value of the property «scroll-wheel-zoom» to false.
gsettings set org.gnome.eog.view scroll-wheel-zoom false
Also, you can list other EOG properties:
gsettings list-recursively | grep -i eog
To fix the backwards keybindings under eom - Eye of Mate, use the following:
gsettings set org.mate.eom.view scroll-wheel-zoom false
Then restart it. ;-)