Lens is a photo-oriented theme, great for people who like to tell stories with pictures, equally suitable for bloggers, scrapbookers, and writers. If you are using premium plan or business plan you can use it free in wordpress.com. Otherwise you have to pay $79 to use this theme.
You can check the Lens By Pro Theme Design Demo.
You can ask question regarding any issue you are facing in comments section.
All About Basic 