Standard images are located in the right column of a webpage and are limited to a maximum of three.
Feature images only appear on the top of homepages and usually include a title and description overlay. Feature images occupy the top space of both the center and right columns.
Teaser images appear with news stories as thumbnails. They display the thumbnail alone without any caption. They only display next to stories on the blog's homepage.
Top images are similar to features in that they appear on the top of pages, above the content. Top images occupy the top space of both the center and right columns. To activate top images on pages, change the type of page to Top Image after attaching the particular image(s).
Learn how to upload images and borrow images in Reason (YouTube).