I am trying to find a good quality T-mount adaptor to fit on my Canon 1V so I can fit it onto my telescope as I fancy trying some b&w film and astrophotography again. I've tried several unbranded versions, as well as a Kood one, but I have not been satisfied with any so far. They all seem to have quite a bit of play, so much so the adaptor is able to move quite a bit in the EF mount itself, which is no good for long exposures where the telescope is tracking stars. I have no issues with lenses, so the mount in the camera is not a problem, and the same happens with my 5D too. As is often the case with things like this, I used to have a cheap one that worked great but it is now long lost...typical! So, does anyone know of a good make to try (ideally available here in the UK)? Thanks in advance.