Here's how I do it (using Windows 7)...
On the image:
-Right click and choose ' view source'
-On the menu bar click Edit and choose 'Find' from the drop down menu (or hit 'CTRL F')
-In the search bar type '.jpg' (without the quote marks)
This will find the source info for the photo and then you just need to copy it. No need to paste into another program.