why aspect ratio is changing?


Watched our first blu-ray dvd last night on brand new pani bd-35 dvd player & brand new pani plasma 58" tv on thx mode. Great treat both in sound and vision. While watching The Dark Night the aspect ratio kept switing from letter box to full screen depending on the sceene. Connection was hdmi direct from dvd to tv. Can anyone help me understand why this happen. Thanks T. J.
tjtrout20
Don't worry, that is intended. On the case it says:

1080p high definition 16x9 variable 2.4:1 and 1.78:1 (imax sequences).
Thanks i thought it was a hardware issue. I feel much better now! A vision from the director? ok I can dig it. I'll enjoy the movie more the second time knowing its not time to return equiment.My son and I were the only viewers that even noticed....and the only ones that know how to work the remotes!! Thanks again for the help. Happy Holidays T. J.
It had to do with its IMAX use.......you probably noticed the dialoge scenes were where it got small and then during big action stuff it opened back up........thats all IMAX issues......I amn no expert but I do know the IMAX movie went in and out of full blown video and I am guessing from there as to why its doing it on BRD.