cybereality wrote:Yes, but show me that DDD image on a CRT. Cause I clearly recall ghosting on CRT monitors.
I didn't say CRT don't exhibit ghosting, I said that CRT monitors are better in any regard compared to LCD monitors from an image quality point of view. CRT monitors still exhibit less ghosting than most LCD monitors, apart for some recent ones like the Planar SA2311W. We already had this discussion in another thread about finding an objective measure for ghosting.
tritosine2k wrote:The red phosphor is the usual suspect when it comes to CRT ghosting , it has worse memory effect than the green or blue, but it still worths it because phosphors are better color primaries than LCD subpixels. So plasma / CRT ghosting is content related.
No, you're completely wrong. The red phosphor is the best in regard to ghosting on CRT monitors, it has practically no ghosting, hence the
"Red eye" shutterglasses method. The culprit is often the slow decay of the green that is used in P22 phosphor, blue is generally very acceptable. Monitors using the P43 phosphor for green wich have faster decay do exhibit a lot less ghosting.
Red eye method without glasses :
Red eye method with eDimensional glasses, no ghosting :
cybereality wrote:Also, here is a picture I personally took of the Acer HN274H
I don't know how you take your pictures, but I think they make monitors look a lot better than what they are. Both my previous screenshot and this one show that this monitor has an awful ghosting, confirmed by the review at DigitalVersus :
Likay wrote:@Fredz: Where's your source of ghosting test images of different screens?
They come from an extensive research on every site I found with ghosting images, I've collected almost an hundred of them by now. I wanted to put them all on a website and use them for the creation of an objective measurement method I was devising, but I found a new job and lacked time for it. Since it ended recently I might have a try at it again.
Likay wrote:I've lately run ghostingtests on 2 different dlp-projector/shutters rigs (both on close to 100" screen) lately and the very first 3 fields of the calibrationscale is not even visible using dlp+shutterglasses.
Yep, DLP projectors exhibit almost no ghosting, in fact they shouldn't exhibit any ghosting at all, the remaining ghosting only comes from the shutter glasses or the not perfect sync with the projector.
Likay wrote:I had to turn up brightness and contrast down to see those but then it get's very difficult to see which specific field that responds to the actual ghosting and then it seems very equal to the ghosting that my dual beamer rig has.
Actually I find that dual beamers (polarized LCDs more than LCDs with Infitec) exhibit more ghosting than DLP projectors, I've put up a webpage (in french) illustrating the different levels of ghosting and an arbitrary scale to classify them, but it's still a bit rough on the edges for now :
http://askyl.free.fr/index.php?option=c ... Itemid=189" onclick="window.open(this.href);return false;
Likay wrote:You're using a dlp yourself right, so you should know what i'm talking about?
Yep, I've recently bought a 3D DLP projector, I didn't took pictures of the ghosting test with it yet but in games or movies I don't see any ghosting at all.
Likay wrote:There's a clear difference between the image cyber and you presents of the very same monitor...
Yes, I think he took the pictures in a darkened room, cameras can't handle these conditions really well. You can see that white seems to be burned and that it adds a lot of image noise, with greys showing random colored points. It makes it hard to compare them with shots taken in good conditions, that's why I've proposed in another thread about the creation of a new ghosting test that it should incorporate some sort of calibration, to avoid those kind of situations.
cybereality wrote:I should mention that I optimized the settings to reduce ghosting. Basically this means brightness at 100% and contrast at 0%. This was not something I did just for the ghosting test, but how I use the monitor normally.
This won't give you a good image, either from a 2D or 3D POV. You should at least calibrate the gammas with the simple method I gave in another thread, or use the calibration software included in NVIDIA drivers. Or much better, use professional color calibration DVDs, ideally with a colorimeter if you intend to write more reviews of 3D displays. This way you would have correct colors, better blacks and contrast and your whites wouldn't be burned, that would be a lot better for games and movies. I guess now I see why you don't see any advantage in using CRT monitors, image quality doesn't seem to be a priority for you (no criticism intended, to each his own).
awesome & very rich in color.
I get back to that...
