I'm trying to customize isotope filtering animation. When filtering out the isotope items, all items are hide by fading out plus resizing to an empty item. I want to get rid of the resize effect and just fade out the items. I want also to apply the same effect when displaying previously hidden items - just change opacity from 0.0 to 1.0 and not to show the growing-box effect. I have never worked with jquery animations, so I have no idea if it is possible to make some hack in this direction or something else might help.
In Isotope v2 the animation duration can be changed by changing the transitionDuration option (see documentation).
In v1 the animations were done in CSS. It is mentioned in the documentation of Isotope. You could change the animation effect by altering the CSS.