rosinate: I have been shooting in theatre for over 30 years. All over the country. Not to bad an article. A couple of notes though. Fast 2.8 zooms are better than primes in this situation. Nothing slower. Depending on the type of production my slowest night is between 1,200 to 1,500 images. There is usually lots going on. I don't agree about shooting raw though. You need to be aware of what the lighting designer has done and go with the flow of the production and the design. This makes all the difference in your shooting. I do not think in 30 plus years I have use any setting other than manual and adjusted on the fly as the production evolves. There is a flow and a symetry to each production. If you have not watched a run through before shooting get a feel for the show, the flow of it. This will help you be successful in your shooting. If you would like more info just send me an email. Good shooting.
:)Many thanks for your valuable comments. Regarding the lenses I do prefer the fast and quality zooms over primes in such situations. But for RAW please note that Canon and Nikon (even in their most recent models) are suffering from rendering what we normally see under artificial lighting conditions. So by shooting RAW alongside of having the precious latitude in exposure correction, you will have the option to post process the colors to get them as close as you have seen the real play.Good Luck.Payam