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View Full Version : Colorbanding in games, need help pls...


Vanzagar
10-28-08, 06:33 PM
Hey guys looking for a little help here, I just got my new system and my monitor has some noticable color banding and I'm trying to determine what is "reasonable" for an LCD. Here's my monitor:

http://www.newegg.com/Product/Product.aspx?Item=N82E16824005114

Below are the pics where I see noticable banding in the fog in Bioshock, do you see this banding on your LCD?? You can see it best when the pics is displayed full screen...

If you have an LCD and see no banding would you please post your LCD, and what type of panel it is and if you can play games without ghosting on it...

I hardly see any banding on my old CRT, a little in the vertical but I see quite a friggin bit in the horizontal on my LCD only...

I have till the end of the month to take back this monitor so please let me know what you see fairly soon... also is there any way to adjust this banding out??

Thanks,

Vanz

[URL=http://imageshack.us]http://img266.imageshack.us/img266/7637/bioshock200810281417207nh1.png[/

[URL=http://imageshack.us]http://img115.imageshack.us/img115/8108/bioshock200810281417360wu0.png[/

[URL=http://imageshack.us]http://img84.imageshack.us/img84/2885/bioshock200810281417360gl2.png[/

ViN86
10-28-08, 07:39 PM
the straight line "banding" you see on your CRT and LCD is actually a lighting effect. it's a particle effect and the light is entering through a rectangular window.

as for the other banding issues, i dont see them at all on my 2407.

NaitoSan
10-28-08, 07:44 PM
What ViN86 said. Also I don't see other banding issues. Even on CRT too.

Vanzagar
10-28-08, 08:09 PM
Yeah your right the veritcals are natural, it's the horizontals I'm worried about...

JasonPC
10-28-08, 08:30 PM
I'm guessing it has to do with your lcd monitor's ability to represent black? I don't really see it on either of my LCDs.

Vanzagar
10-28-08, 09:25 PM
Hmm, really... it's very clear to me yet I can't see on my CRT, I think I will take this pic into Fry's and BB and see if I can find a replacement...

So you guys all see a nice smooth transition in the fog and not visible bands or steps?

Thanks,

V

Vanzagar
10-28-08, 09:38 PM
This is a digital pic of what I am seeing, you should be able to see the banding now... the colors are washed out cause I don't have enough back light... looks like I'll be taking this monitor back, it's got real nice colors though and no ghosting or dead pixels...

http://img523.imageshack.us/img523/8043/dsc09876beg7.jpg (http://imageshack.us)

Vanzagar
10-28-08, 09:43 PM
What ViN86 said. Also I don't see other banding issues. Even on CRT too.

You wouldn't see it on CRT's, I think it would only really appear on LCD's. I only see it in heavily fogged areas, and it's real annoying... pretty bummed about it...

einstein_314
10-28-08, 09:46 PM
Take that LCD back. I don't see any banding on my Dell 2407. Everything is nice and smooth.

WeReWoLf
10-28-08, 11:23 PM
I don't see anything on mine either.

shilk
10-29-08, 12:52 AM
I see it. I know my LCD (http://www.envisiondisplay.com/products.asp?EPage=products&SMenu=g19lwk) isn't the best, but it was free so I'm not complaining. I could never go back to CRT. :p

It has to do with the Luminance Output, methinks. Mine and yours has Brightness: 300 cd/m2, while the 2407 has 450. One of the things I've noticed is how the black colors don't give out a vibrant black at all. It's like an in-between gray color.

Here's a sample from the intro video from The Witcher. I marked the "weird areas" on the body with the yellow blob to get a general area. It's really noticeable when the image is at the lower half of my screen.
http://img136.imageshack.us/img136/3387/witcher1df8.jpg

I've learned to live with it for now until I upgrade monitors, but it is annoying to see it in some games. I get it in Mass Effect and The Witcher in some places.

fugu_fish
10-29-08, 07:56 AM
I'm sure your new LCD is a TN panel, you you have to expect some banding. There are websites to test for it like this:

LCD test (http://www.lagom.nl/lcd-test/)

I went from a nice Dell 20' S-IPS panel to a Hannspree TN and was horrified by the banding in certain game. Sins of A Solar Empire showed it the worst.

There's a thread about it on [H]ard:

here (http://www.hardforum.com/showthread.php?p=1032192492)

Both have different product names: the W2600HP has a S-IPS panel and the W2600HPF has a TN Panel.

EciDemon
10-29-08, 08:31 AM
Hey guys looking for a little help here, I just got my new system and my monitor has some noticable color banding and I'm trying to determine what is "reasonable" for an LCD. Here's my monitor:

http://www.newegg.com/Product/Product.aspx?Item=N82E16824005114

Below are the pics where I see noticable banding in the fog in Bioshock, do you see this banding on your LCD?? You can see it best when the pics is displayed full screen...

If you have an LCD and see no banding would you please post your LCD, and what type of panel it is and if you can play games without ghosting on it...

I hardly see any banding on my old CRT, a little in the vertical but I see quite a friggin bit in the horizontal on my LCD only...

I have till the end of the month to take back this monitor so please let me know what you see fairly soon... also is there any way to adjust this banding out??

Thanks,

Vanz



This is because your new monitor is uses a 6bit display not 8bit.
Not so huge difference? not true.

on a real 8bit lcd each pixel can produce 256x256x256 colors or 16,7 million shades of color.
6bit on the other hand is only 64x64x64 and thats only 262144 shades of color, in other words a lot less.

To get around this 6bid displays uses a raster effect kind of like if you were to save a photo as a 256 color gif, you use a raster effect to blend the colors.

These filters usually work ok, but you will notice the difference if you look at a color gradient, or as in your case, the smoke in Bio shock.

EDIT: you could also somewhat compare it to running a game or your desktop in 16bit vs 32bit as we did in the old days ;)
16bit color on desktop is only 64k colors however, but the effect is simalar. (nvidia used to have this nasty raster when you ran a game in 16bit color)

Vanzagar
10-29-08, 02:01 PM
So maybe I shouldn't take it back, sounds like a limitation of the technology, so you guys/gals that are not seeing the banding do you have TN displays or IPS?...

Looking at the different types:

http://en.wikipedia.org/wiki/TFT_display#Types

I thought the non TN displays had troubles getting the pixel response time down and they were suseptable to ghosting?

Also, does "Brightness: 300 cd/m2" have an effect on this banding or not, anyone know for sure?

Vanz

Vanzagar
10-29-08, 02:14 PM
Hmm the Dell 2407 is also a TFT S-PVA... but it has a poor response time, looks like it would have some ghosting... no banding but some ghosting?

http://www.anandtech.com/displays/showdoc.aspx?i=2940&p=2