I just purchased my first SMC-m lens today, and now need an adapter. I presume I am needing a Pentax K to EOS adapter? Also, some on Ebay have the focus beep chip and some don't. Is this necessary for video work? I personally didn't even know it existed because I've kept my stills setting on burst mode and not single, so it never beeped in manual focus. I tried getting it to beep using video mode, but it didn't seem to want to do anything. Is the focus beep only good in stills mode? Is it worth the extra $10 or so for the adapter with that capability? Oh, and if someone has a link to an adapter that they know works well and won't cause issues with my camera, I would be extremely grateful.