Zoom tool

The zoom tool is nothing but another way of taking great advantage of the incredible speed for zooming in or out when editing images with Photonyx.

Select this tool from the toolbar (Z)
Click with the left button of your mice to zoom in.
Right click to zoom out.
The best use of this tool is to drag to select a rectangular zone that will be zoomed at.
Cursor

You also access the zoom tool with any other of the editing tools simply by right-clicking with the mouse button.