It is all in Qimage ....  simply put the images in the queue, and right click on the large view in the center of the screen.
Select SLIDE SHOW and you have a viewer.
 A second metod would be to use the tool in the Utility menu that says ,  PHOTO EDITOR SETUP. After you found the program you want,  click RUN photo Editor.
A third that I use a lot is best shot selector.
Select as many thumbs that you wish to view/ inspect, Then right click on any thumb and choose best shot selector. I get two at a time and the click for next. I can use the mouse to magnify or reduce.
Best, Martin.
Fred