Here is a quick tip that can be very useful to save you time spending on browsing through your folders that you have been there before.
Holding down Shift key and right click on the file or folder you need to copy, and select Copy as Path. The full path to the file or folder will be automatically copied into your clipboard and ready to be Ctrl+V later on.
The trick works in Windows Explorer or the File Open dialog box from almost all application on both Windows 7 and 8, and applies to both file and folder.
Again, remember that you have to hold down the Shift key and right click on the file or folder you want to copy from.
[Hat tip to Windows Guides]