Scanners are also available to convert slides as well as prints. The electronic method works best for photos that have been specifically requested or previously approved. For example, after you send a batch of prints to an editor for review, the editor may request that you submit certain photos electronically. In this case, editors are often happy to work with an electronic file that they can load directly into the text of your article. If you can take high-quality photographs, you can also sell them independently, without an accompanying article.
Many magazines buy shots of their basic subject matter year-round.
You don't have to simply guess what editors are looking for. Many magazines offer photographers' guidelines that list upcoming articles and the types of photos that will be required. These guidelines will tell you when photos must be submitted for each issue. You may even make more money by selling your photos separately than if you combine them with an article. Larger magazines pay more, of course, but also expect top quality.