HOW TO ZOOM WITH SCROLL WHEEL?
As we want to create Our Best Work, we need to zoom and zoom makes work easy, fast and neat. It’s Very simple to zoom your canvas and work with the details. Steps are Follows:
1. Open Your Photoshop and click on the Edit Button on the top left corner.
2. Go to the Bottom of option panel and choose Preferences and then General ( Or simply Ctrl + k )
3. Now Check the Box “Zoom with the scroll Wheel” as shown in the figure.
4. Now Press Ok.
Its Done. Now You are able to zoom your canvas with simply scrolling your Mouse Wheel.