Well, I have tried to use AVSHD, but so far I am unable to get a complete full range (1-235) output from my BD. I ask this because with my BD-55 and FP (Epson TW500), no matter how I try, it seems that the lowest range (1-7?) is always clipped (using AVSHD low level flashing bars pattern). I assumed it was a problem with the player, but I have a friend who owns a BD-35 and a Panasonic plasma, and using the same pattern he is able to get the full range out of the player without touching the default Brigthness in the player.
The strange thing is that when I use the complete 1-235 pattern in the disc (the one with flashing bars that go from below black to wtw), playing with the brightness controls at both the player and the FP I can reach a point where 1-7 don´t seem to be clipped. But I fear I may be really compressing the range? How can I know?