M4/3-NEX Lens Mount Adapter Micro 4/3 Mount Lens to Sony E Mount Adapter for NEX-5 NEX-7 NEX-3 LM-NEX NEX-VG10 LM-NEX

It is inexpensive and does do the job. It isn't the best construction but it is thin and i use it in combination with the Olympus BCL lens. It makes for a very pocketable Sony a5000.