Where are my photos stored? I am new to OS X. In my About this Mac -&gt; Storage, I have 21GB of photos. However, I have checked the Photos application and there are nothing in it. 

I am not sure where these photos are stored as I don't usually use this computer for storing photos. I guess they might have been imported when I plugged in my iPhone, somehow. What is the best way to track them down?
In the Finder, under the File menu, select "Find" (Command+F). In the window that opens, leave the first pulldown menu at "Kind", go to the next pulldown and select "Image" then hit enter. Assuming you set the search to "This Mac," the Finder will then list every image file on your computer, allowing you to see exactly where they are.