Here is a note from the editor of the magazine:
@Editor Wisconsin Natural Resources magazine wrote:

The best way to forward digital images for our consideration is to forward them as attachments, preferably JPEGs or in the original format a the original resolution. Don’t try to enhance or manipulate the photos before sending them as these changes tend to affect our ability to consider them for publication. Strong shots would have even lighting (no really blasted white areas or really dark spots), sharp focus and resolution at least 300 dpi for an image of four inches square or so. We like shots that bring readers close to the action so they can see the details on the GPS unit, details of what a cache looks like and the faces of people enjoying the geocaching experience. Try not to give us photos of people taken from the “3B’s” (butts, backs and boots) because people feel left out of the experience when viewed from the back row of an event. Thanks to the geocaching community for their help. We are aiming to show readers how GPS units add to outdoor enjoyment when hiking, fishing, locating a campsite or enjoy a relatively new activity like geocaching.