The Google AdWords Blog announced a new ad format available on the image search vertical. The new ad format is the old-style leaderboard display ad. The leaderboard is an image ad 728 pixels wide by 90 pixels tall.
Here is a picture of a leaderboard ad on Google Image search:
These ads are charged on both a CPM and CPC model, depending on your ad settings and goals.
Today we’re expanding the image ad formats available on Google Images by testing rich media leaderboard units that appear above Google Images search results and invite you to try new products and services. With the introduction of this display ad format on Google Images, you now have a great opportunity to reach users with engaging ads, whether your goal is to build brand awareness, or to drive clicks and conversions.
Advertising on Google Images allows you to reach hundreds of millions of users around the world who use the site to find relevant photos and images every week. Today display ads on Google Images are available on a small fraction of queries in the US and UK only. Over time, we hope to make display ads on Google Images available on more queries globally.