Zoom and Pan

You can zoom, and scroll your slices individually, or as a whole using the buttons on the "Magnify" panel .

If the Auto Link Zoom button looks like this: , the zoom and pan setting will automatically be applied to all slices. However, if it looks like this: , then if there is selected slice the zoom and pan apply only to that slice. If there is no slice selected, then the operations apply to all slices regardless.

If your mouse has a scroll wheel you can zoom in using the mouse by pointing (with the mouse) to an image feature on which you want to zoom, and turning the scroll wheel. Pulling the scroll wheel towards you zooms in, pushing it away zooms out. (You can reverse the scroll wheel behaviour in the user Preferences).
If your mouse does not have a scroll wheel you can zoom in using the mouse by pointing (with the mouse) to the image, holding down the middle button, and moving the mouse up and down.

The buttons have the following actions:

zooms in by a fixed amount (120% of the previous value).
zooms out by a fixed amount (83% of the previous value).
sets the zoom to 100% (no zoom).
if there is a slice selected, sets the zoom and pan of all slices to the same as for the selected slice.

If any of these buttons is greyed-out, this means that the operation is not applicable to the display at this time.

Free Zoom

You can also zoom to any value using the Zoom facility on the View menu. . This brings up the Zoom Control dialog:

Enter the required zoom factor as either:

• A percentage, e.g. 200% to zoom in by a factor of 2; or
• A multiple, e.g. 2.0 to zoom in by a factor of 2.

Image Scroll (Pan)

You can scroll an image by pointing to an image with the mouse, press and hold down the right mouse button, and drag the image. If the image is zoomed, but the mouse drag does not scroll the image, then select a zoomed slice to enable this feature.
Note: you have to be zoomed in to be able to scroll the image.

When a slice or all slices are zoomed, scroll bars appear at the right and bottom of the image display window:

These also allow you to scroll the image up-and-down or left-to-right. Click and drag the blue region of the scroll bar, or click on the arrows at either end of the scroll bars for finer control.

If the image is zoomed, but the scroll bars do not appear, then select a zoomed slice to enable the scroll bars. If you then want set the zoom and scroll of all slices to that of the selected slice, click on the button.

To zoom and scroll all the slices of the image in unison, make sure that all slices have the same zoom and scroll setting (by selecting a slice, and clicking either the button or the button). Then de-select the slice by double clicking on the selected slice. Zoom and scroll operations will now apply to all slices, regardless of the setting of the Auto Link Zoom button.