Originally Posted by keyser
I know its bad for pq... But im wondering if dimming projectors brightest mode to be more accurate will make it noticably so when with ambient light, which is the only situation most would use in.
It probably depends on the projector, my Planar 8150 basically doesn't have a non calibrated mode, definitely not one that gives a significant boost in brightness, Panasonics and the like are often hugely brighter in torch mode.. Usually the biggest difference in brightest mode is the color temperature, it's usually much cooler (higher color temp) you'll see that difference pretty much regardless of room lighting. Potentially it could even be more noticeable if your room lighting is very warm, it could appear even cooler than it normally would (I'm just guessing here). The other big thing that you lose in brightest mode is primary accuracy and gamma/greyscale tracking, though for these, since the ambient light will wash things out it's probably not going to matter a lot there.
IMO, the way you combat ambient lighting is to minimize it. Decorate your HT with dark-ish non-reflective paint/treatments, and design your lighting so that it shines where people are and not at the screen. This is how I have my HT setup and I can throw quite a bit of light on people/guests making it so you can all see each other and be comfortable without lighting up the whole room, or especially the screen. This works pretty good for me, I usually have a few friends over and we often have something to eat and socialize while we watch something or a few of us play games or something before the movie.
You really don't need to have livingroom/workplace light levels in your HT for it to be comfortable and inviting for guests/socializing/non-critical viewing, you just need to think about your lighting a little differently, and try to light people/areas rather than "the room" like we normally try to do.