One weakness of the 47SL80 is that the black levels it produces are on the lighter side, and not as rich and deep as some other competing televisions, particularly when you are watching movies in a dark room. This could be a downer if you are a big movie fan and enjoy the whole cinematic experience that comes with watching DVDs with the lights turned off.
The television does offer wide viewing angles so you can get a decent view even if you are not sitting directly in front of it, although some other LCDs in the 47SL80's range surpass it a bit in this regard. As it stands, the 47SL80 claims to offer viewing angles up to 178 degrees.
Perhaps the biggest down side to the viewing performance of the 47SL80 is the coating of the screen itself. LG decided to go with a glossy finish, which looks fancy when the television is turned off, but while viewing it in bright rooms, can cause plenty of glare issues.
The glare issues can be an annoyance, and a matte finish would have been a much better choice. Due to the glossy finish, one might have to place the television strategically within a room depending on the location of windows and lamps to try to downgrade the glare problems.
Audio is quite good thanks to the invisible speaker system that resonates quality sound in all directions, as compared to some other televisions whose speaker systems may aim audio just towards the center. Overall, the performance can be deemed as satisfactory for most, although those with a keen eye for picture quality may notice the small defects.
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