Projector question for you: is there any way to calculate the depth of field of a projector? In the current project I'm working on, the set designer wants to have multiple screens at varying distances from a single projector, and while I told him they can't be as spread out (he has them all the way up and down the stage), I don't know how to figure out at what distance the focus will be completely unusable. I fruitlessly tried searching for help on Google, so just wondering if you have any tips.
I am not sure how to calculate this either! As a general rule of thumb with wider the lens, the shallower to depth of field is.
When I have been confronted with this problem in the past I have usually used 2 projectors, 1 for US and 1 for DS. If budget is an issue the set designer needs to change the design or cut something to give you more cash!
Sorry not to give a more helpful answer!