Hello, hope this the right place for this question, sorry if it is not.

I am looking to get an DSLR for the family, so I can take pictures of birthdays, weddings, etc, I would also like the camera to take good low light photos.

I also want HD video to film my son.

I think I have narrowed it down to the cameras above but I can not really tell if it worth spending the extra money on the EOS 650D, compared with the 600D?

Do the cameras have similar lens mounts?
I am asking as I am wondering if I get the 550D that they may stop making lenses for it?

The camera will also eventually be used to take macro shots of mouths (I am a dentist not just weird...) so this also comes into consideration.

The lenses I am looking at I have put links up to and wanted to know if they were ok for what I need them for?



Also, the HD video that is taken, what file type is it and what editing software can you use to edit it and how can you watch it on a TV.

I brought a HD camera (JVC) and transferring files and editing them was a nightmare and trying to watch them on a TV even harder, so that is why I am asking.

If you have got this far, thanks