How to zoom a photo using trackpad

[hndn]

Hi,
I can't find this topic in forum, so here's my drama: how do you zoom in/out a picture in iphoto (09) using trackpad? Any shortcut?
Thanks.

 

[jmann]

If you have a unibody macbook or macbook pro, or a mac with a multitouch compatible trackpad you just need to touch two fingers on the trackpad and spread them apart to zoom in, and pinch them together to zoom out.