Unfortunately, settings - rather "ultimate" settings - vary by individual. Typically, you can try any of the Entertainment modes (Standard, Dynamic, Movie Mode, etc.) and out of those, choose one that looks best. From there, adjust the picture settings starting from the "contrast and brightness" and moving down into the detailed settings.
When you say the picture is blurred, do you mean on SD channels, or HD channels?
There is no 100Hz technology on plasma. That's an LCD processing technology.
Check the resolution of the Blu-Ray player - see if you can get 720p or higher (preferably higher) selected, and that should reduce much of the graininess. However, if the film is older, that graininess may be part of the actual film.
Broken text is likely a result of a low resolution or SD picture.
Keep me posted.
I just got a Samsung PS50A756T1M after hearing a lot about the Plasma. There are a few problems that I facing even after I have tried a lot of fiddling with the settings. I am listing the problems below and hope that with experts' advice, I will be able to really enjoy my new Plasma.
1). Overall picture seems to be very dark (as compared to my earlier 42" Toshiba Regza.
2). The picture seems to be blurred and speckled on Sky. I did try to look at all the connections and reconnected all the wiring.
3). Still can't figure out if the Plasma is working on 100 HZ or not.
4). Tried watching a Blue ray on my Samsung BD1600 but the picture was grainy. Tried changing the HDMI cable but did not get any improvement.
5). The text on the screen (moving or still) looks like broken and lined.
I am just trying to get the basics right before I connect my Xbox 360 or PC to the Plasma. Looking for a quick help.