Hi Guys!
I am totally new to Zbrush, and I was wondering how to zoom in and out quickly with a stylus (ZBrush 4R7).
ALT + stylus drag does not work as it says here:
http://pixologic.com/video/video-v2-zcr.php?videoname=http://www.pixologic01.com/zclassroom/homeroom/lessons/videos/zbrush-introduction/at-startup.f4v&w=1024&h=576
And the mouse wheel is not working (neither for scrolling on shelves, nor for slides, nor for zooming)… 
Could you help, please.
What does it do instead of zooming?
Are you releasing ALT (But not the stylus)? In other words you press alt and start to drag but release alt while still dragging to zoom. While zooming if you press alt again while dragging it goes back to pan mode.
Thx MentalFrog! 
You were right!
I have not encountered shortcuts like that before, but now it’s my favourite, combining panning and zooming makes it really quick.
There is a mouse wheel script to zoom. On here, someplace.
Still, I wish upon relealing ALT it would not switch from one zooming level to another (depending were your stylus was), but begin the zooming process from your actual zooming level…
Thanks Doug!
YW. I also posted some files, some of which may interest you. Happy ZBrushing