Title says it all - a friend sent me some copies of the show, and they have a nice picture (samples if you guys want). I’m guessing the cameras were the famous four tube EMIs?

From IMDb:

Camera EMI 2001 (studio work)

Were the EMIs known for comet tails in the red channel? One scene had them pretty badly.

This web page may answer your question:

http://techandtrouble.blogspot.com/2013/09/the-emi-2001-color-4-tube-camera.html

Interesting read, so far.

Your post caused me to get the 2009 DVD release, thank you...