When it comes to having user modes, the more the merrier. BenQ is offering two on the HT2550. Either can be based on your choice of the preset modes. When you save in the User modes, you’ll always get what you saved, when you bring them up. With projectors lacking, usually, they will hold your settings, but, let’s say you are watching a movie, and it seems too dark so you decide to pick up the remote and change the Gamma setting. Great. But, now there’s no “memory” of what the previous setting was. In other words, you make changes, if you don’t have a user memory to save them in, you better start writing down those changes – or at least all your preferred settings.
Thanks to the two modes, this BenQ basically avoids that. I would have liked to see three modes, as we like to set up one mode for “bright” situations, one for “best” performance, and these days, we often set up a 3rd for HDR modes. Well, two out of three is way better than none!
But wait! There are two more modes - ISF modes. ISF is Imaging Science Foundation, an organization that trains and certifies Calibrators. When a projector is ISF certified, it indicates that the color controls are well done enough to do a respectable calibration, but it also means two extra savable modes are provided. But: They are not User modes. They are password protected, so that a calibrator can drop in calibration settings, and you, the end User, can't accidentally wipe them out.
In theory, unless you pay an ISF calibrator to calibrate your projector (a rare thing for a $1500 projector since calibrators can charge from about $300 to $750 for a calibration,) so most people in this price range, count on good out of the box color, or trying our published calibration settings for "a few bucks."
Ours settings can't take into account variations in lamp color, or the shift in color as thousands of hours are put on the lamp, but more often than not, the feedback is that our settings provide a visible improvement. Just remember that without ISF, you only have two modes that you can save settings on, that you can recall later, after making other changes.