See: http://tech.lds.org/forum/showthread.php?t=45#post193
Then we did text/video overlay for Hymns
See: http://tech.lds.org/forum/showthread.php?t=61
This last conference we updated our really old and really big camera. We had several problems.
1. Picture Quality: Lenses have come a long way
2. Placement: people would bump the tripod. The camera and operator also blocked the view of a few people.
3. Height: if we put it on a box stand so as to see above the crowd when people stood it would jiggle every time the operator moved.
4. Pan/Tilt/Zoom: unless you have a professional operating it, you can get motion sick from watching them tweak it.
5. More people had to be involved to "run the show".
Our solution was to replace the old camera with a CCTV Camera. After some research we decided on Canon VC-C50i. The reasons are:
1. PC Controlled Pan/Tilt/Zoom using a serial cable
2. 26x Zoom (we needed at least 24x)
3. 9 Pan/Tilt/Zoom presets: I didn't need all 9 of them, but it was nice to zoom to Speaker, Choir or Conductor with the touch of a button. Great motion and precision. The speed of all 3 pan/tilt/zoom is easily controlled.
4. Price: lower than some
http://www.bhphotovideo.com/c/product/3 ... ation.html

We just had our conference today and I was setup in the library controlling the camera, the Slingbox transmission and the text overlay. The camera was mounted up on a ledge in the chapel where it was out of the way and no one could bump or block it. The image was fantastic.
Anyway, thought I'd share in case anyone else ever looks into the same thing.