What causes VB?
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Here is the explnation from the Secrets review of the 500u
"FPN arises when different adjacent pixels have different apparent gain or brightness with a uniform input signal. With FPN, an image of uniform brightness can look streaked or dirty, just like having a dirty projection screen. This is most noticeable during pans in which a uniformly colored object moves across the screen. In these cases, a stationary pattern becomes more noticeable."
http://www.hometheaterhifi.com/volum...or-5-2004.html
"FPN arises when different adjacent pixels have different apparent gain or brightness with a uniform input signal. With FPN, an image of uniform brightness can look streaked or dirty, just like having a dirty projection screen. This is most noticeable during pans in which a uniformly colored object moves across the screen. In these cases, a stationary pattern becomes more noticeable."
http://www.hometheaterhifi.com/volum...or-5-2004.html
FPN vs VB
These are 2 disticntly different issues as I have seen it so far. One causes an effect that appears as a "dirty" or modeled background and the other is a very apperent vertical line situation. These vertical lines are many pixels apart but definitely non-focused almost shadowed lines.
Yes, they both seem to happen during panning or motion type scenes but they are indeed different.
MediaTK
These are 2 disticntly different issues as I have seen it so far. One causes an effect that appears as a "dirty" or modeled background and the other is a very apperent vertical line situation. These vertical lines are many pixels apart but definitely non-focused almost shadowed lines.
Yes, they both seem to happen during panning or motion type scenes but they are indeed different.
MediaTK
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what is vb exactly,and what should i be looking for?
I think i may have seen it,when in the seen of master and commander,there was a fog seen and the fog looked like it was flashing on or off( i don't know if this is a good example)
I think i may have seen it,when in the seen of master and commander,there was a fog seen and the fog looked like it was flashing on or off( i don't know if this is a good example)
Actually a very good DVD to show VB in all is glory 
Horizontal motion with backgrounds seem to show it most. I am still wondering if this is a scan frequency issue. The refresh rates, etc. may be involved.
The vertical lines that are several pixels apart are what constitute VB. The lines exist during pans and horizontal motion (especially noticable on HD sports like soccer, football or basketball) .
So far, nobody has come to the plate with a solution for those of us with Sony FPs. I own another LCD (Proxima 9260+ and a Dila unit) neither of which exhibit this issue.
I also here about complaints from the Z2 folks as well as the Panasonic 300 and 500 units. They seem to have some help based on driving panels that jitter (mostly green) but that doesn't seem to help those of us with Sony's.
We are working on a few theories related to Panel Drive voltages and several others but I can't seem to get many answers at this point.
Sony, STEP UP!! What do you have to say?? Possibly designed obsolescence as most manufacturers seem to be good at. Wow, did JVC ever miss the mark there
With the exception of contrast (ok, maybe heat and sound) the Dilas seem to blow things away. Too bad they didn't have a better marketing department, huh Trig?? I may keep my Dila just for fun
MediaTK
Horizontal motion with backgrounds seem to show it most. I am still wondering if this is a scan frequency issue. The refresh rates, etc. may be involved.
The vertical lines that are several pixels apart are what constitute VB. The lines exist during pans and horizontal motion (especially noticable on HD sports like soccer, football or basketball) .
So far, nobody has come to the plate with a solution for those of us with Sony FPs. I own another LCD (Proxima 9260+ and a Dila unit) neither of which exhibit this issue.
I also here about complaints from the Z2 folks as well as the Panasonic 300 and 500 units. They seem to have some help based on driving panels that jitter (mostly green) but that doesn't seem to help those of us with Sony's.
We are working on a few theories related to Panel Drive voltages and several others but I can't seem to get many answers at this point.
Sony, STEP UP!! What do you have to say?? Possibly designed obsolescence as most manufacturers seem to be good at. Wow, did JVC ever miss the mark there
With the exception of contrast (ok, maybe heat and sound) the Dilas seem to blow things away. Too bad they didn't have a better marketing department, huh Trig?? I may keep my Dila just for fun
MediaTK
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The opening fog scenes of Pirates of The Carribean are excellent for revealing VB, I see the lines plain as day on my 2HD even after tweaking it down the best I can.
Quote:
I've yet to see VB on my Sharp PG-A10X, but I have this movie and will check it out. Also, did you notice how fake the opening scene of this movie looked? It looked very CGI to me...
| Originally posted by Marissadad The opening fog scenes of Pirates of The Carribean are excellent for revealing VB, I see the lines plain as day on my 2HD even after tweaking it down the best I can. |
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