Zoom a large image in IKImageView

Question

I have an IKImageView in NSScrollView. Now, I have two problems:

1. When I show a large image and zoom it, the animation loos very crappy. Is there a way to get it to switch images more smoothly?

2. When the image is zoomed bigger then the IKImageView, zoom - centerPoint lock on left - bottom of IKImageView. How can I set the zoom - centerPoint?

Thanks

f91kdash