I have not been a very active member of the club, since I am currently without a Hyperpin
Quoted from 85vett:Brightness and contrast will be TV specific as well as personal preference. I believe my brightness is at 50-55 and my contrast is at 90. The LED backlight is at 10-12. Can't recall the figures 100% but those should be close for my 46" samsung LED tv.
I remember using setting similar to 85vette for the backlight in "ideal situations".
I liked having my virtual pin in a darker location without much lighting. My overhead lights are not too bright, but sometimes the light comes through during the day and changes my needs. I would then increase the backlighting for the time being, then change back once the situation was back to "ideal".
I hate to compare a virtual pin to a phone, but the back light is a setting that is very similar to your phone. In the dark you need it low, and in the light you need it high. I believe that some TVs might have an auto-sensing feature, but I didn't use it on mine. I didn't wire the sensor to the glass (so it could tell how bright it was) so it was non-optional for me.
When I bring to shows, that was something that I had to adjust based on the placement of the machine and the lighting. Don't forget the backbox TV. It can be easily overlooked, and needs to be turned down to look it's best as well. IMO, the backbox tv didn't need to be changed (increased) after getting it in the ideal settings.
I know it sounds kinda crazy, but if you try to take a picture - you would be able to tell if your backlight is too high. It will cause an overexposure. Adjust down as needed. Afterwards you should be able to take nice pic, then you know that your setting is right. Also, it should look better too