It will zoom, but locks in the viewfinder at the stage you start shooting at, on 8fps ...if you release shutter then the viewfinder will let you see, what you have changed the focal length too.
I really like the camera, for its lightness and silent usage, not usable under Florissant lighting at shutter speeds over 125th or you get banding, due to the scanner action on the sensor. ( Which happens on all mirrorless cameras ) but for a moving subject and changing a focal length i would call this a basic requirement on a camera, not so good!....unless your subject matter doesn't move and you will always be happy at one focal length........then i guess its a camera that suits some people.
For me unfortunately it will be a 50% split for me with my DSLR cameras...