Any subject can be transformed to a round-up by shooting the right images. And what could be better than to shoot from your own personal experience on a subject?

For example, you might love fishing around the Great Lakes area. Photograph the best locations that you personally know. Be sure to gather as much information as you can about the area while you're at it. This information you will use to write your very brief article. Really, it can be nothing more than a collection of photo captions (a few sentences each), which follow an introduction of a few paragraphs. Your images are what will stand out in telling the story. 

The Great Lakes idea is an example of photographing similarities, in this case fishing spots. Another example might be historical homes. I did one photo round-up in similar shots entitled, "Orchid Bouquets for Weddings." All the images were of different bouquets from simple to extravagant. 

However, there are other kinds of round-ups that will make a saleable package to the right editor.

You might shoot chronologically. Perhaps a major attraction or landmark is under construction in your local area. You could capture the very first stone laid all the way through to the ribbon-cutting event. 

Or you could shoot the highlights of a rodeo event, where you capture action shots of cowboys riding and falling from their bucking broncos. 

Another round-up would be a smaller portion of a larger event. Say, for example, there's a hot dog eating contest at the State Fair. Shoot the event from the beginning to the end, capturing the eager contestants, to the pile of hot dogs, to the grand prize, and everything in between. 

In round-ups it is important to shoot everything that captures your eye. Editing can come later as you sort, selecting the best shots that capture the subject, location, or event. And always gather as much information as you can about your subject - brochures, flyers, even business cards. These will be very helpful when putting words to your images.