Depends on what I'm doing. I usually like to keep a 50mm prime close at hand as well as something with more range, like the 24-70mm I had with me at the shoot in the picture. With the Sony a77, they're Zeiss but these days I just have a little cheapo Cannon set up in front of the computer for videoconferencing. When we start preparing for production, I'll leave the gear up to the cinematographer though. It's important to let the specialists handle their departments, after all... but if it were up to me, I'd probably grab a few of those cinema cameras from Blackmagic Design.