I have a 30 minute project that will be shown on a large screen. Should I set my settings differently when rendering my master? I intend to master one copy on DVD and another one in DV CAM.
If you are going t oput it on DVD and DVCAM, you should setup your project for them. If you use a normal NTSC/PAL DV setup, you'll be fine. I've done DVD with a projector onto a big screen and it looked good.