1. yes. It was my specific question to Stephen. I recognise this when watching movies and lean back in my chair that the voices go up. But I have a huge screen in front of me so voices are still inside the picture, only at the top edge. But I think for people with "small" TVs voices will come from far above the TV then. So for me it's not that important, I think more important is that you at least have the vertical measurements. But this seems to get easily very complicated so I tend to drop this and stick to just horizontal measurements. 2. Would be possible but difficult. And one reason for me asking Stephen was for measurements that you can't easily re-do (in a studio or high end home cinema etc.) 3. I don't know how time consuming this would be for them, but every new piece of code introduces the chance to get new bugs etc. I already told Stephen that I think most important is to have the possibility to at least measure vertical look angles. But with Stephens answer I'd have a million new questions..