That's correct. Keep in mind that that will give you a shallow DOF though.Also I agree that I want as fast a shutter speed as possible in low light. So that means I should have my aperture wide open ... right?
Also, keep in mind that the exposure your camera recommends, in auto modes, may not be idea for this. I'd think that you'll want proper exposure for the parts of the mode that are lit by the brighter parts of the projected image...but that will be up to you. The point is that you may want to put your camera into manual mode and see what exposure settings you like best.
Thanks for that. These days I only shoot in Manual mode (so that I always learn). Shallow DOF is OK. A bokeh effect with a black background won't even be noticed.