What would the hand held camera have been back then, Marconi or IVC possibly ? It looks pretty ropey
in the video. The main studio cameras were EMI 2001s I think ?
I will try and find out some more for you. Given the single was released in 1976 I think we can safely assume the studio cameras were the EMI 2001's. OB's did have IVC 7000 portable and studio cameras. i think those concerned at the time would be disappointed that you refer to it as 'pretty ropey', despite it's somewhat adhoc appearance it would have been staged professionally.
Edited to add, my source does not have any more information I'm afraid although I believe it was directed by Mike Mansfield in one take.
Oh, I'm sure everything was set up properly and professionally. Take a look at 1:27, the registration seems to be noticeably out bottom right of the picture (though as Noggin says the blooming and flaring doesn't 'help')
Well at 1'27" the whole bottom right of the picture is covered in lens flare so all bets are off
The much thicker green edge around Elton's white shirt collar is what made me think that might not be a 2001, but with that amount of light to cope with - who knows?! The more I look at it the more I think that might not be a 2001 though...
The two eye level cameras don't quite match - for my money the camera-left camera is making the nicest pictures.