View mode

This mode allows you to view singe pictures one by one - in the separate window or in fullscreen mode. And this is generally what you create photo album for.

In the view mode you can do the following:

scale (zoom in and out) picture;
scale picture to best fit the window;
cancel scaling (view picture in its actual size);
scroll picture with mouse or keyboard in case it doesn't fit the window;
advance to next, previous, the first or the last picture in the current group;
switch between window and fullscreen viewing mode;
reload (re-read) picture file;
edit current picture;
turning on and off slideshow mode;
open program preferences.

These function are available through toolbar buttons, by context menu that appears when you right-click the window, or by keyboard and mouse controls.