Sometimes it takes time for Google to crawl and index your website pages but until then they won't appear in the Google search results. But there's a way to speed up the indexing process.
Camera images usually contain additional description about camera settings and scene information of the the picture taken. By using EXIF, you can view this data online.
To avoid using someone else's copyright protected images you aren't allowed to use for commercial or even personal use, Google Advanced Image Search has got you covered.
