› View pictures » You can zoom in and out to show more or less of a picture on the screen at once. This is useful if you want to see a big picture in its entirety, or if you want to inspect the fine details of a picture.
You can zoom using the mouse wheel. Scroll up to zoom in or scroll down to zoom out.
You can also zoom using the buttons on the toolbar. To zoom in, click the Enlarge the image icon, and to zoom out click the Shrink the image icon. These look like "plus" and "minus" signs.
Alternatively, click View ▸ Zoom In or View ▸ Zoom Out.
To view the picture in its original, unscaled size, click View ▸ Normal Size. This is the same as the "100%" zoom level.
You can choose to zoom in so that the picture fits fully in the window, even if you resize it. Click View ▸ Best Fit to do this.