Those are not transitions but are incorporated into the showing of a slide.
Commonly called the Ken Burns effect.
(named after the man who does those wonderful documentaries on public television).
Transitions are the dead time between slides.
As Bob said.....take a look at Proshow Gold at Photodex.com
You can download a full functioning trial copy for free.
The free trial copy will put a Photodex watermark on all of your output, but all features are available for you to try.
The Zoom feature lets you zoom into/out-of a photo as it is displayed.
The Pan feature lets you pan across the photo in any direction.
You can Zoom and Pan at the same time.
By using three copies of the same photo with zero transition time between photos, you can zoom into a photo then pan across it and then zoom back out. All one smooth effect.