Summary: I recently purchased the TC-P50GT30 model and the fluctuating brightness on my set (that many other reviewers have talked about) is extremely noticeable on my TV in the Standard video mode. It isn't just something that is barely perceptible. There is a definite and noticeable drop in brightness and then, ever so quickly, a switch back to the original levels. It was nearly unbearable to watch some programs and movies that have a lot of transitions from light to dark.
I'm colorblind, but even I see the color inaccuracy...
J. Fuller "U2Joshua", Amazon
22 June 2011
Summary: I took a risk in purchasing this set despite a number of other reviews giving common complaints of fluctuating brightness, black levels and colors. I am a fan of Panasonic plasma, and have a 2005 480p Plasma that still gives as good of a picture today as it did then. As such, I assumed that buying a new, 2011 model would prove to be a superior experience. It was not. I read that others had issues with fluctuating brightness, black levels and color.
Summary: I bought this TV to replace an older 42" Panasonic Plasma that I've had for nearly 5 years. Delivery and setup was perfect, no complaints. My family and I really enjoyed the picture, especially the HD picture which really stood out watching the NBA playoffs. We also used the set to watch Amazon movies on demand via Amazon Prime and to watch MLB.tv, which worked well.
Summary: I generally don't write reviews but felt compelled after a couple annoying experiences within 2 weeks of purchase. 1 - The change in brightness, mentioned in other reviews, throughout viewing is incredibly frustrating - to the point where you start a discussion about it with whomever you might be watching with, and pointing it out throughout the course of the show / movie ("see, did you notice it just got darker").