Originally posted by: TempletonPeck
Originally posted by: xtknight
Originally posted by: TempletonPeck
I noticed on my latest new LCD that certain shades of darker colours like gray exhibit what I'd describe as shadows or blotches (looks almost like a bar graph in shadows). I only noticed it in certain windows where that colour was, or certain still pictures and video.
Someone told me that it was just part of the 6bit to 8bit conversion with this type of monitor, however I've never seen it before.
I'm wondering if they are right or if the monitor is defective?
It probably is 6-bit->8-bit conversion (FRC/dithering). But, it's probably an old form of it. Many newer LCDs use Hi-FRC which is much harder to detect since it's a better implementation.
I can sympathize with you as my ViewSonic VP930b has the same problem. Fortunately it doesn't happen too often. There's always a chance that what you're experiencing is not dithering, but I'd be surprised if it appeared on that many tones that badly. My VP930b has about ten gray tones where it's bad or noticeable but the rest seem fine. When you consider you rarely have a solid color like that it doesn't present much of a problem.
I looked at the box and the monitor was manufactured in June 2007, so it isn't the latest production run for the monitor.
I haven't noticed the conversion problem before on other TN models, at least not so noticeable that it showed up in common colours on your Windows applications like IE, Windows Explorer and outlook express.
It was several shades (almost all) of darker colours, like grey, black, navy blue, etc.
I still have time to return the monitor, so I'm OK in that regard. I just wanted to determine if it was just this one, or if all the monitors of this model type are the same and have the problem. I won't exchange for another if it's this model type is what I'm driving at.
I phoned up HP and asked them and they seem to think my monitor is defective, but I wanted to ask around.